Tutorial: Restore Verizon Droid Razr M KitKat (4.4.2) firmware

If you've done something to your Droid Razr M (version 4.4.2 - KitKat) and now it won't boot and you've tried everything else to fix the problem and are just about to toss it in the trash as a bricked device, try re-installing the factory default firmware:

1. On your PC, install the latest Motorola drivers and reboot

2. Connect your phone to your PC using the USB cable and make sure your phone battery is charged 100% (if not, wait until fully charged)

3. On your phone, hold down power, volume up, and volume down buttons simultaneously.  When the device powers off, let go of the power button but keep holding down the volume up and volume down buttons until the bootloader screen appears.

4. Quickly press the volume down button until AP Fastboot is highlighted and then press the volume up key.

5. The screen should now be in fastboot mode and should say "Battery OK" and "usb connected"  (note: if it says "Battery low", use these instructions to charge your phone)


6. On your PC, download the Motorola version of fastboot  {credit: mattlgroff}

7. Extract the fastboot file for your operating system to somewhere in your PATH.  For example, on Linux:
  • chmod +x fastboot
  • sudo mv fastboot /usr/bin/
8. Open a terminal command prompt and type fastboot devices

9. You should see something like  {SERIAL NUMBER}   fastboot

10. On your PC, download the appropriate Android firmware:
11. Extract the zip file contents to a temporary location on your PC

12. In a terminal command prompt, browse to where the extracted files are located and then type the following commands (one at a time):

fastboot -w
KitKat (4.4) ONLY: fastboot flash partition gpt.bin
fastboot flash sbl1 sbl1.mbn
fastboot flash sbl2 sbl2.mbn
fastboot flash sbl3 sbl3.mbn
fastboot flash rpm rpm.mbn
KitKat (4.4) ONLY: fastboot flash tz tz.mbn
fastboot flash aboot emmc_appsboot.mbn
fastboot flash modem NON-HLOS.bin
fastboot flash fsg fsg.mbn
fastboot erase modemst1
fastboot erase modemst2
fastboot flash logo logo.bin
fastboot flash boot boot.img
fastboot erase tombstones
fastboot flash recovery recovery.img
fastboot flash system system.img
fastboot continue


Note: initial boot may take up to 10 minutes to complete

Comments

  1. When entering `fastboot flash modem NON-HLOS.bin` it fails, and when doing `fastboot flash system system.img` I get a `target reported maximum download size`. Help?

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    1. i flashed every single one perfect till i got to the end system system.img it said max download size.. Did u ever get that figured out man cuz im not sure wtd. Hoping you do..???

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  2. Make sure you're using the Motorola version of fastboot: https://www.dropbox.com/s/sk5el3a2u56uiok/snapdragon-fastboots.zip?dl=1

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  3. Also, make sure your phone is fully charged first

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  4. P.S. If you started the flash process with a low battery and the modem or system won't load, you can use this guide to charge your battery and then restart the process: http://www.droidrzr.com/index.php/topic/1577-charge-your-battery-without-a-special-cable-or-taking-the-phone-apart/

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    1. Do you know what I mite be missing.. Drivers are good battery is full just stumpted.!! Please help

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  5. Make sure the zip file you downloaded isn't corrupted. For modem and system you should see fastboot loading them in chunks.

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  6. Here's an example of what you would see if you DIDN'T use the Motorola version of fastboot: http://www.reddit.com/r/MotoG/comments/20ivwj/flashing_to_stock_rom_problem_with_img_sparsechunk/

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  7. Potentially off topic, but you appear to know your way around android systems. I have installed safestrap and have a CyanogenMod kitkat rom running though it. The problem is that upon reaching full battery discharge i need to use the 'jumper leads' as usb charging is not functional until it hits the safestrap menu, and due to my lack of care it reaches 0% every week or two.
    Do you know of a method of restoring the original system files responsible for charging from pre-boot/recovery/fastboot menu?
    Thanks

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  8. I don't use safestrap so I can't help you much there, but regarding your issue of your phone accidentally draining the battery entirely, these resources may help:

    https://play.google.com/store/apps/details?id=it.elaware.autopoweroff

    https://play.google.com/store/apps/details?id=AutomateIt.mainPackage

    https://motorola-global-portal.custhelp.com/app/answers/prod_answer_detail/a_id/88946/p/30,6720,8577

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  9. Can you please help me return my razr m recovery back to stock. I'm running KK and wanted to take the latest OTA minor update. A step-by-step noob friendly guide would be awesome. TIA..

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  10. Hi murk_core. To return only your razr m recovery back to stock, follow the guide above but instead of the full Step #12, just run: fastboot flash recovery recovery.img

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    1. Thanks however I'm having trouble downloading the jb ROM from the link above because my crappy internet connection keeps resetting. Do you have any alternative link probably just the stock recovery.IMG or a resume capable download link will ensure I download entire file completely. TIA

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  11. No problem.

    Here's the JellyBean version: https://www.dropbox.com/s/of796mb1je80nea/recovery_jb_412.zip?dl=1

    And here's the KitKat version: https://www.dropbox.com/s/m9z3evik8kcfcri/recovery_kk_442.zip?dl=1

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  12. I have been running CM 11 nightlies for KK bootloader but when I installed that I didn't realize about the GPS issue so I've followed your process and downgraded my bootloader to the JB one and have tried installing the latest snapshot (M10) and nightly (9/25/14) of the JBBL version of CM 11. Unfortunately in both cases CM never boots. It just hangs at the bootloader warning/logo screen. I never get to the CM splash screen, even after waiting at least 10 minutes.

    I've flashed back to stock once already (as your steps suggest) but still no luck. Any suggestions?

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  13. I answered my own question but thought I'd post back to let others know. I was using CWM recovery version 6.0.4.9 when I had trouble booting so I installed TWRP recovery instead and it worked great! I got TWRP 2.6.3.0 here: http://forum.xda-developers.com/showthread.php?t=2448721

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  14. P.S. If you want a slightly more up-to-date version, I use: http://androidhosting.org/Devs/Dhacker29/msm8960/TWRP-2.7.0.0-moto_msm8960-hdpi.img

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  15. Thanks for uploading the stock recoveries. I managed to return to stock. Do you have the stock build.prop as well? The one before the September OTA update? I keep getting " build.prop has unexpected contents" error when trying to update. I tried my backups but still getting the same error. TIA.

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  16. No, sorry. I haven't seen that error before.

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  17. This may help (haven't tried personally): http://openbuildprop.scheffsblend.com/device/XT907

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  18. Thanks. I found a build.prop from the latest update and tried comparing mine and found nothing different except the build name and numbers. I have no idea what's causing that error. Thanks for all your help.

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  19. I am stuck at step #12 where i changed my directory in command prompt to the location where i extracted Kitkat files. Using the first command "fastboot -w" output i receive is 'fastboot' is not a recognised internal or external command, operable program or batch file.
    Do i need to copy fastboot files to the Kitkat extracted folder and try again ? or is it any other issue

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  20. After successfully putting all the commands my phone returned to ap fastboot then again i entered the last command "fastboot continue" now i am on the boot screen droid animation thing going on and i need to wait for 10 minutes from here on .My phone is connected to my pc and is automatically installing the drivers right now. Setup wizard starts its not even 10 minutes just 3-4 minutes. Thanks you brother for helping me out.

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  21. What to do if I just want to run the stock Verizon OS,version 4.1.2 ? please give the commands !

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  22. Hi Siddharth, use the 4.1.2 link in Step #10 above.

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  23. Note: the sbf.droid-developers.org site appears to be down at the moment. If it stays down I'll upload both JB and KK to another share service...

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  24. I wanna go to stock 4.1.2 not on cynanogenmod. Also do I have to follow same commands? Will it work without rooting or USB debugging

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  25. Everything on this blog post relates to stock Verizon OS. If you want Cyanogenmod, you can use this tutorial: http://mrbluecoat.blogspot.com/2014/07/tutorial-installing-cyanogenmod-on.html

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  26. While putting 4.1.2 stock Verizon OS i am getting this problem at command line "fastboot flash boot boot.img" it says Partition (boot) Security Version Downgraded preflash validation failed for boot.
    What should i do now ?

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  27. I took the September OTA and the dates became July. Isbit supposed to be like this or it should be September.
    [IMG]http://i62.tinypic.com/1vpyd.png[/IMG]

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  28. Hi Siddharth, restoring to stock OS is all-or-nothing. It sounds like your custom recovery is conflicting with the stock boot image. If you're using the exact steps in my guide above, then it's probably your locked OTA KitKat bootloader conflicting with the downgraded JellyBean boot image. You'll need to install the stock KitKat OS and then root your phone and unlock your bootloader to downgrade to JellyBean.

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  29. Hi Murk, I'm not sure what the date is supposed to say since I ditched the stock OS a long time ago and have been happily running Cyanogenmod.

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  30. It's OK. I wonder if you know of a link where I can download the 182.46.15 OTA cause my phone downloads the 182.46.10 when taking the OTA not sure why it's doing that. Though the OTA splash screen says I'm donwloading the 182.46.15, after it's done it's the lower version one. I wanted to make a stock TWRP backup before switching to Kitstalk probably for good.

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  31. Hi, I thank you for your step by step guide. I couldn't even get my phone past the start up. Now it will at least get to the main screen. I had one issue that I can't seem to get past. When I type the commands, I fail the command fastboot flash boot boot.img, I downloaded the firmware a few time to make sure it wasn't corrupted but I get the same resulted. I'm install in a xt907 (4.4.2). Any ideas on how to get this corrected? My phone is locked, and the only way I can load it with factory load.

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  32. Hi Matthew, make sure you're using the Motorola version of Fastboot (step 6). If you are, please add a comment with the exact error message you're getting so I can review further.

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  33. I re-downloaded step 6 and still get the error. It reads. Sending 'boot' <10240 KB>... Okay [0.800s] writing 'boot'... preflash validation failed FAILED finished. total time: 1.094s

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  34. Sounds like you have a locked bootloader, which will prevent overwriting the current boot image. If your screen does not say "Device is UNLOCKED" then try this command to unlock your bootloader: fastboot oem get_unlock_data

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  35. I typed that command it gave the okay and the code for the unlocked to be checked at Motorola. I visited the site and they said its not eligible for the unlock key.

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  36. Mr. Blue, Thank you for all your hard work in the post. I figured it out and found a command that bypass's the error for the boot loader. I re-install the rom using your commands. After I started the phone, after setting up all the settings I turned it back off and the sticky Sticky bit factory _fastboot error came up. I went back into AP boot and typed the command "fastboot oem fb_mode_clear" and "fastboot continue" the phone rebooted and the error hasn't come up again. Thank you again for your help, I hope this little bit of information will help someone else also.

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  37. My phone was stuck in the "eye" animation during boot, so I decided to start fresh and flash with Kitkat. I was unable to do it though, because the phone said it was locked (probably because I had taken the OTA Kitkat update previously). I kept getting the error that preflash validation failed. I finally decided to enter all of the commands from step 12 regardless of whether they were successful. It worked! My phone rebooted and went to device setup. I'm up and running again! Thank you so much for these instructions!!!

    I had to take a crash course in terminal commands. Noobs, here's a good primer: http://www.cs.princeton.edu/courses/archive/spr05/cos126/cmd-prompt.html

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  38. top marks for you mr blue coat. i bought a rarz m off ebay and i didnt know it was rooted and updated the os OTA and things turned to crap and have been trying for the last 2 days to fix it but i was using the normal fastboot and not motorolas. lol it was so easy once i had that :/
    thanks anyway

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  39. I just want to let you know that this walkthrough just saved my phone. My phone wasn't taking the KitKat OTA so I tried to jam it through via fastboot without really realizing what I was doing - the result was I had a rather shiny looking brick that could get into AP FastBoot mode and that was about it. Thankfully, following your instructions, I was able to get all of the files updated that needed to be updated and then I was done!

    I will note that, after "fastboot continue", my phone didn't come back on at first. So, as a last ditch effort, I tried to load Recovery, which failed - got the dead Droid with the exclamation mark. After a few minutes, though, the phone randomly rebooted on its own and came back to life. Not sure how or why, but it would appear your instructions provided just enough data for the phone to pull its wits together and come back to life.

    Thanks again and keep up the good work!

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  40. You the best man Mr Blue. Thank you so so much, everything worked like magic. Having a hard time rooting on KitKat... towelroot doesn't seem to work for me. A lil help there?

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  41. Hi David, glad it helped.

    Hi Jeff, you are correct -- the latest OTA update prevents rooting if you have a locked boot loader. See this article for options: http://www.andromods.com/root-unlock/183-46-15-ota-droid-razr-hd-maxx-hd-razr-m.html

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  42. alright checked it out. Guess i would have to wait for a while. Thanks for you help

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  43. hi can you please give me the stock kitkat version OS for my razr M the above given links are not working
    I am unable to update my mobile to Kitkat from system updates via settings as it says uptodate and no further updates for this mobile please help me in getting kitkat update i want kitkat update on my mobile please

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  44. Hi Sumit, here you go (stock 4.4.2): https://www.dropbox.com/s/tl966p0f20zkudz/VZW_XT907_4.4.2-KDA20.62-10.1_CFC_1FF.xml.zip?dl=0

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  45. ...And here's the JellyBean version: http://motofirmware.com/files/download/383-vrz-xt907-981q-94-1-cfcxmlzip/

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  46. hi sir fastboot does not works on my 64 bit operating system please help

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  47. It works on my 64-bit Lubuntu Linux and Windows 7 machines. What OS are you using?

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  48. I came across this guide when I couldn't get my Droid Razr M to boot (stuck on the "eye" animation). I can't thank you enough for getting my phone back to a usable state. However, after running through the steps and installing stock KitKat 4.4.2 (version 183.46.10), my phone keeps trying to push update 183.46.15 on me. Whenever I try to install it, it fails. Any ideas on how I can get the update to stick?

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  49. Hi Matt, is your phone fully charged or plugged in when running the update? Is it having trouble downloading the update or installing it? Do you receive any error messages or can you describe the failure a little more?

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  50. Update is downloaded, it fails when attempting to install. I've tried it with all combinations of full battery, half battery, plugged in, and not plugged in. When I select "Install Now", the phone shuts down, the update progress bar makes it to about 25%, then it immediately displays a dead Android robot with a red exclamation point over his chest. The phone then reboots saying that the update was unsuccessful, then it will start nagging my to install it again after about an hour.

    I will also note that when I ran through the steps from your post, not all of them completed successfully.

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  51. Which steps in my original instructions didn't complete successfully? A red exclamation robot is sometimes a sign of a corrupt recovery image.

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  52. Sorry, I don't recall. I was in desperation mode and trying anything to get my phone to boot. Would you recommend running through all the steps again?

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  53. Hi Matt, if you don't mind the extra effort I would recommend running through all the steps again and detailing any errors you encounter.

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  54. Blue coat need some help out here. I have updated my phone to .15 ota and read in xdadeveloper forum that some security patches have been done so I can't root my phone or even unlock my bootloader. Please help

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  55. Hi Siddharth, unfortunately that is correct -- the latest OTA update patched all the root/unlocking exploits so you'll need to wait until the next brilliant hacker finds a new way in. Sorry.

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  56. hi mr.blue
    i use this guide and flash my phon its on .15 update but affret flash again my phone stay on unlocked botloader and reboot again
    what can i do
    4.4.2 battery drain annoied me pls help

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  57. I have some issue after following all the above procedures my phone came back to life. But when ever my phone turns off or I switch off it never really switches off as it goes into AP fastboot screen. In that case i have to press all three buttons together to do a normal boot. Can you help me with this problem its annoying me. Currently I am at .15 but this problem is since .10 after following ur instructions. The ota also didn't correct it. My device is bootloader locked and unrooted. Any solutions pal ?

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  58. pls help i want to downgrade and its fail now i cant flash gpt sbl1 sbl2 sbl3 modem just flash recovery bot logo and system and image and now my phons touch screen dont work pls help

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  59. say that sending 'partition' (32 KB)...
    OKAY [ 0.013s]
    writing 'partition'...
    Battery Low!!
    FAILED (remote failure)
    finished. total time: 0.272s

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  60. i solved my problem with this tutorial
    fastboot oem fb_mode_set
    fastboot oem fb_mode_clear
    fastboot erase userdata
    fastboot erase cache
    fastboot reboot
    and now want downgrade again pls help

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  61. Hi Siddharth, from your description it sounds like you're stuck in a "fastboot mode on reboot" loop. Try running "fastboot oem fb_mode_clear" and then "fastboot reboot"

    Hi Muhammad, I'm glad you solved the low battery issue and were able to get your phone to work again. You can not downgrade with a locked bootloader so that might be your problem.

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  62. Do i need to follow all the procedure again ?
    I don't have the required files right now and also sbf droid developer site is down so somehow i have just managed to get Motorola fastboot but not the STOCK OS .15 OTA.

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  63. battery issue dont solved only i can boot my phon
    and when phon is boot on it say warning unlocked bootloader and i use custom recovery so i think boorloader is unlock but i dont know why after install 4.1.2 version phon stay in unlocked bootloader and restart and this happen again

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  64. Hi Muhammad, have you considered installing a custom ROM (like Cyanogenmod) instead of the stock ROM?

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  65. hi mr.blue yes i flashed custom rom i use cm12 and bliss 4.4.4 android and its worked but when flash rage m v1.2 with 98.16.3 Base my phon dont boot on and restart

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  66. I get the error message update gpt main version failed.

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  67. You can just skip the gpt.bin step if you get an error.

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  68. Sorry, I tried many things...I followed your instructions and then my touchscreen doesn't respond..I followed the instructions about this the ones muhammad smaily said but still can't get it to work...Could you help me?

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  69. Ok...now It won't flash the system.img even does have the same firmware it had before.
    The terminal says:
    load_file: could not allocate 1135175052 bytes
    error: cannot load "system.img"
    Please help I'm out of options, everything I tried and nothing works

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  70. Hi, I'm sorry...it was my fault...reinstalled everything all went well.

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  71. Hey i have problem with many xt907 stucks on Please Wait This May Take A Few Minutes After i flashed all

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  72. Hi... Please pardon my ignorance. I am totally new to this stuff and trying my best to follow the instructions in the hopes it might save my phone. I am in fastboot mode and connected with factory cable. I have the device drivers installed. Can I get some noob instructions on properly downloading and extracting the zipped files? I thought I followed the steps but command prompt is finding nothing for "fastboot devices". Where should I extract them to? I see "extract all" when I click open. Is that I should do or am I missing something? So sorry again, I appreciate any help.

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  73. Mr. Blue, please help the following issue:

    I get a validation failed issue for boot.img and for system.img.

    everything else flashes fine.

    "fastboot flash boot boot.img
    sending 'boot; <8192 KB>...
    OKAY[.634s]
    writing 'boot'...
    Preflash validation failed
    FAILED
    finished.

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  74. I figured out how to make this work.

    I am using the droid razr m, and if you read the above comment you'll see I was having an install issue.

    I am not sure on my theory about forward compatibility but I am certain of backward compatibility. You cannot revert the file systems. If you have 4.4.2 when getting bricked, you must find the 4.4.2 OFFICIAL VERIZON files on the internet and download them.

    The filename is VZW_XT907_4.4.2-KDA20.62-15.1_CFC_1FF.xml...........

    just google it. That was mine, anyways. The reason you HAVE TO use this file with these instructions, is because with the droid razr m, the bootmenu is locked, and not unlocked for you to load any rom or recovery mode you want. depending on the model you have, you can unlock it through motorola's service online.

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  75. Hi All, sorry for my delay in responding...

    Armando & Jake, I'm glad everything worked out and thanks for sharing your solutions!

    Erasmo, it sounds like your original stock zip is corrupt (see http://goo.gl/o18PCC). Did you get any errors on the flash modem step?

    Sarah, does your phone boot at all? If it can turn on, does your computer recognize it when you plug it into a USB port? You can extract the files anywhere and then copy the fastboot executable into the extracted folder and then open a command prompt with Administrator privileges and use "cd" to browse to the folder location and then run the fastboot commands above. If that's too overwhelming you may want to ask a technical friend to help or perhaps use a more graphical tool like RSD Lite: http://rsdlite.com/

    Nolly, sorry but creating root exploits are way above my skill level. I'll keep an eye out, though and publish a link if I find any.

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  76. Hello mr blue what different firmware 182.46.15 and 183.46.15 for motorola razr M?And which one the better for signal network reception?

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  77. Hi Golberg, I avoided the *.15 upgrade because it prevents me from rooting my phone. If you haven't upgraded yet, you may want to consider unlocking your bootloader first in case you ever want to root your phone (see http://www.andromods.com/root-unlock/183-46-15-ota-droid-razr-hd-maxx-hd-razr-m.html).

    Regarding your question, though, I believe the only difference is the phone models the update is applied to (they use different versions for different Razr models).

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  78. Hello Mr Blue do you have this two firmware(182.46.15en.us and 183.46.15en.us)for Motorola Droid Razr M XT907.Or can you tell me where can i get it?

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  79. Mr Bluecoat.

    please help me i was running cyanogenmod 12 on my motorola droid razr xt907 and it was really slow rom so i decided to go back to cm11 and for that i had needed bootloader compatible. i installed 4.4.2 for this purpose via rds lite and my mobile is stuck at booklop i am thinking to downgraded to 4.1.2 with RDS Lite and install recovery but your recovery link is not working so kindy help me i want a working recovery so that i can go back to 4.1.2 and install cm11 please help me....

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  80. Hi Golberg, the last bullet point on step #10 above should include the *.46.15 update

    Hi Reeyan, here you go: https://app.box.com/s/vj144cqi2pxdkg9hleczm4qfi3oscjq0

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  81. Mr Blue Coat - just wanted to say thanks for the tutorial, and for having all the files referenced in one place. I was able to reflash my Razr M with VZW stock firmware (183.46.15), and now it is working good as new.

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  82. #1 - the Motorola fastboot download isn't working; looks like dropbox disabled the account

    #2 - I think I found the proper fastboot, but when i try to run any of the fastboot commands, I get "The program can't start because AdbWinApi.dll is missing from your computer. Try reinstalling the program to fix this problem."

    I automatically assumed this was a motorola driver issue, so I redownloaded the most recent drivers. Same issue. I then downloaded sdk-tools lite version that has that dll, but I'm still getting the same issue. I've unzipped everything, and I've tried rebooting. Is there a particular folder I should put that DLL in so that the fastboot can run?

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  83. Hi Lea, I've updated the download link. The zip file contains fastboot for Linux, Mac, and Windows. The Windows version also includes AdbWinApi.dll which you should put in the same folder as fastboot.exe

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  84. Mr. Blue,I,m using Motorola Droid Razr M XT907 and it firmware is KDA20.62-15.1 system 183.46.15. i want to change the firmware to KDA20.62-15 system version 182.46.15. can you tell me what i must do?

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  85. Mr Blue Coat when i downgrade using your provided 4.1.2 it says somekind of getvar error in RDS Lite

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  86. Hi Reeyan, if using RDS Lite you'll need to manually edit the XML file before attempting to flash. Instructions: https://www.youtube.com/watch?v=8goIQmqC25k

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  87. Hi Golberg, I'm not sure how to switch between 183.46.15 and 182.46.15. Sorry.

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  88. Hi Mr Blue Coat,
    my device is a verizon droid razr m so I followed your tutorial and i successfully entered the above commands except the last but one (" fastboot flash system system.img").
    when I entered it ,it says:
    sending 'system' (262144kb)... Okay [ 47.005s]
    writing system... INFOProtocol error (multifash unexpected)
    FAILED (remote failure).

    Now a black screen appears on my phone with these infos:
    AP fastboot Flash mode (s)
    10.9B(*) (sha-6114a2, 2014-07-29 06:20:44)
    eMMC Info: size 8Gb
    Device is UNLOCKED, stats code:3
    battery OK
    Connect USB
    Data able
    Fast boot reason: Fast boot menu selected

    More over if i press and hold the 3 buttons together and I select "Normal Power up", A warning sign written in green color appears saying WARNING BOOTLOADER UNLOCKED: with an additional text written in white that says" Your device's bootloader has been unlocked, allowing critical software components to be altered in a manner that may cause damage to the device or result in injury to users. Motorola disclaims any liability for harm ...
    please what should i do now to bring my phone back to normal?
    thanks in advance.

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  89. Hi Kokou, the "bootloader unlocked" message is normal (that's part of the rooting process of your phone). Are you sure you're using the Motorola version of fastboot?

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  90. Thanks so much Mr Blue Coat, I just did it with the Motorola version of fastboot.Once again thank you.
    Now I intend to install a customized Rom like Cyanogenmod...

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  91. Help! I flashed my RAZR MAXX HD with the rom you included in your instructions that says it is for custom firmware. It flashed fine so i set the phone aside to charge overnight. I came back to it in the morning and it will not respond, it will not power on or respond to a usb connection. To me it appears to be a brick. What did I do wrong and is there anyway to fix it?

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  92. Hi FlagCC, if you can't even get to the fastboot screen, your battery probably needs to be charged. Follow these instructions: http://www.droidrzr.com/index.php/topic/1577-charge-your-battery-without-a-special-cable-or-taking-the-phone-apart/

    Also, the firmware above is for the Verizon Motorola Razr M. You'll need to download and use firmware specific to the Razr Maxx HD here: http://www.andromods.com/download-files/vzw-xt926-download-droid-razr-maxx-hd-stock-firmware-update.html

    This guide may help: http://www.andromods.com/tips-trick/how-to-restore-stock-factory-firmware-unroot-unbrick-droid-razr-maxx-hd-xt926.html

    ReplyDelete
  93. Please Help! I m using razr m 4.4.2 183.46.10.locked bootloader want to downgrade or unlock my bootloader. my phone is rooted. I tried motopocalypse but unable to get unlocked please help me unlocking my bootloader

    ReplyDelete
  94. please help i restored my device by following the steps you suggested . Xt907 was restored and worked perfectly till it went on system update and while the updates were being installed it bricked .. it is i guess hard bricked ... just the led light is flashing when ever i connect a charger nothing else working ... is there n e solution to it ...please suggest ....

    ReplyDelete
  95. I am running xt926m 183.46.15
    The phone boots to Fastboot by default. Then I have to boot holding volume keys and select normal boot.
    Will this help?
    Do I need to run all steps? Or just a subset?

    ReplyDelete
  96. Hi Steve, I recommend going through all the steps if you don't mind restoring your phone to stock.

    ReplyDelete
  97. Thank you Mr. Blue Coat!

    I had 4.4.2 and a LOCKED bootloader, but this sequence worked just fine using the stock OS. Your link for VZW_XT907_4.4.2-KDA20.62-10.1_CFC_1FF didn't work (some access limit reached), but I was able to search and find it (on https://www.androidfilehost.com/).

    FWIW, I just created a simple run.sh with all of your fastboot commands in it -- a little easier that way :)

    ReplyDelete
  98. Hi Bryan, thanks for the feedback!

    ReplyDelete
  99. Can i flash my mototrola 926 with this methode? i have my motorola HD verizon 926 flash files (VZW_XT926_4.4.2-KDA20.62-15.1_1FF)
    if yes so plz help me or give me any helpful link..

    ReplyDelete
  100. Hi Atif, I don't have experience with the 926 so you may want to check out this article: http://www.andromods.com/tips-trick/how-to-restore-stock-factory-firmware-unroot-unbrick-droid-razr-maxx-hd-xt926.html

    ReplyDelete
  101. please I need a video or picture guide on how to go about it from 7 to 12.

    ReplyDelete
  102. how long it takes to flash system.img?

    ReplyDelete
  103. No more than 5 minutes. Usually just a minute.

    ReplyDelete
  104. can i used this method as a downgrade method to JB? I'm currently on the recent upgrade KK ( version 183.46.15)

    ReplyDelete
  105. Only if you have root and an unlocked bootloader.

    ReplyDelete
  106. Hi Jane, this is a somewhat technical process. It might be helpful to have a friend assist you to avoid any errors. In theory, it should be as easy as: https://www.youtube.com/watch?v=9vaHPVV_-b0

    ReplyDelete
  107. goodday
    please i used cmd to try the process u gave but its not going through
    wen i enter tools it says "tools not recognised as an command,operable program or batch file"
    please wat can i do

    ReplyDelete
  108. Hi Olax, make sure you're running the commands in the same folder where the fastboot executable is located. For example, if you make a folder in the C: drive called "mobile" and put fastboot.exe in that folder, you would open a cmd command prompt and type "cd C:\mobile" [ENTER] and then type your fastboot commands.

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  109. i try flashing "fastboot flash sbl1 sbl1.mbn" it says unknown partition
    what can i do please

    ReplyDelete
  110. thanks i was later able to get it work
    thanks a lot really appreciate
    pls what can i do its not booting into recovery and no developer option in settings

    ReplyDelete
  111. pls can u help med on how to root the phone and flash a new recovery into it

    ReplyDelete
  112. Hi Olax, please see my other guide: http://mrbluecoat.blogspot.com/2014/07/tutorial-installing-cyanogenmod-on.html

    Note: depending on your phone OS version, you may not be able to root your phone or install a custom recovery.

    ReplyDelete
  113. I tried to follow your tutorial precisely, but I'm getting...
    load_file: could not allocate 1135175052 bytes
    error: cannot load 'system.img'

    I am using the Motorola fastboot in Windows 7 with the adbwinapi.dll in the same folder. I've renamed or removed all other copies of this dll in my path.

    I downloaded the 183.46.15 firmware twice, although three times might be a charm...

    Any suggestions would be greatly appreciated.

    ReplyDelete
  114. Woot! Reread the entire post and comments, I decided to try RDSLite just to check and Voila! Thanks for your links and very clear instructions.

    This time I paid attention to your comments to the less tech savvy folks.

    Thanks again.

    ReplyDelete
  115. hi sir good afternoon i'm from in dominican republic I have a problem 183.46.15 version 4.4.2 and I can not do the bootloader I would like to put my phone back to 4.1.2 or 4.0.4 please help as I do the way I learn fast and I'm good I'm good at adb fastboot thanks

    ReplyDelete
  116. Hi Br Studios, I am not aware of a root exploit for 183.46.15. Sorry, but at the moment you can't unlock your bootloader or root your device.

    ReplyDelete
  117. I'm so thankful I found this article because my phone is finally booting up again. Thank you for getting my phone to work again as well as teaching me something new about my phone.

    ReplyDelete
  118. I just did this process again for my wife's phone to fix her's since it did the same thing. We have the same phone (Motorola Razr M X907). I was able to get her phone to boot up again without the first command for wiping the user's data. She is very appreciative as well :)

    ReplyDelete
  119. Thanks for this solutions worked for me, but only for a short time, it bricked again, I'm having this log abstract from flash process:

    flash partition gpt.bin
    sending 'partition' (32 KB)...
    OKAY [ 0.012s]
    writing 'partition'...
    FAILED (remote failure)
    finished. total time: 0.310s

    ...

    flash tz tz.mbn
    sending 'tz' (210 KB)...
    OKAY [ 0.026s]
    writing 'tz'...
    Preflash validation failed
    FAILED (remote failure)
    finished. total time: 0.333s

    ---

    flash boot boot.img
    sending 'boot' (10240 KB)...
    OKAY [ 0.773s]
    writing 'boot'...
    Preflash validation failed
    FAILED (remote failure)
    finished. total time: 1.094s

    ...

    And then the phone come to live again, until some days after, it get bricked again. I'm tired of flashing one, and one more time.
    Can you help me to identify what is happening? Why the software bricked constantly?

    I tried to communicate with motorola support, but only get bullshit:

    // [10:54:03 PM] Alex: What I can do for you is to connect you over to our dedicated chat support team in Latin American Support to better assist you with regards to your concern. Let me get the link where you can get a hold of them. Please give me a moment.
    // [10:55:45 PM] Alex: As much as I wanted to help you, since this is regarding the software issue, we have a dedicated team who will further assists you on this concern.

    ...and then:

    // I regret what happened but checking their previous chat can confirm that his mobile was imported.
    // Apparently the operating system does not allow the start so checking in your case I refer to the technical service

    Conclusion: Send us you phone and some money.

    My phone:
    DROID RAZR M
    183.46.10.xt907.Verizon.en.US
    Android 4.4.2
    KDA20.62-10-1
    10.9B(*) (sha-6146a2, 2014-05-02 00:54:39)

    -> DEVICE IS LOCKED, Status code: 0

    I appreciate any help. Thanks.

    ReplyDelete
  120. Hi Enner, it sounds like a faulty battery connection. Does your battery drain just before it re-bricks?

    ReplyDelete
  121. Had the same problem Fix is here
    http://forum.xda-developers.com/droid-razr-m/general/fix-bricked-razr-m-4g-xt907-hd-preflash-t3135462

    ReplyDelete
  122. hi Mr. Blue
    I am using Motorola Droid razr M (xt-907). one day it just turned off and even after many attempts it was not booting. I read a blog suggesting that I just press (power+vol up+vol down). it worked and i was very happy but it got stuck on logo screen. I tried flashing through RSD lite but it failed to flash logo but my phone was alive again. BUT yet again it started uninstalling random apps after 2 days. I flashed it again. this continued for about 2 weeks then one day after flashing it came directly to fast boot screen saying "failed to hab check for boot:0x56.....Fastboot reason: boot failure" plus on logo screen it says "Customer id error: contact dealer..... boot to suspend/TCMD mode:dead:ffff:000000:000000cc"

    ReplyDelete
  123. PLEASE HELP!!!! I love my mobile. I have tried approx every thing. Today i tried to flash back to stock using utility but no luck. system,boot etc are not flashing. My device is not rooted.
    Device is Locked. Status code:0.
    if I press (power+vol up+vol down) i go to the the boot mode and following 5 options appear.
    Normal Powerup
    Recovery
    AP Fastboot
    Factory
    BP Tools

    but no matter what i selects it reboots and back to fastboot menu :(

    ReplyDelete
  124. Thank you very much Mr. BEST coat :)
    first i flashed VZW_XT907_4.4.2-KDA20.62-10.1_CFC_1FF.xml but it didnt work. Then i tried VZW_XT907_4.4.2-KDA20.62-15.1_CFC_1FF.xml and all commands worked and now for the first time in a long time I have crossed the logo screen and now the droid eye is shining brightly :) WOWWW it worked !!!! Thanks again Mr. Blue Coat.

    ReplyDelete
  125. Hi Saad, I know the feeling :)

    Glad it helped

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  126. I am getting an error when running "fastboot devices" it reads "The program can't start because AbdWinApi.dll is missing from your computer. Try reinstalling the program to fix this problem." The file is sitting in System32 right now. What is the fix?

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  127. Scratch the previous, got that fixed. Now I just have a bum battery that goes from 100% to "low" status in 30 seconds (and that's when I can convince it to charge at all)

    ReplyDelete
  128. i just follow the instruction and my phone is a live .. i use several ways to flash but fail avery time ..

    ReplyDelete
  129. Thankss Mr. Blue .. you r a genius

    ReplyDelete
  130. Hi mr blue.

    Any ideas on how to unlock with out being able to get to debugging mode? phones stuck on the droid eye logo so i cant flash anything bc its locked already tried the steps running 4.4.2-KDA20.62-15.1

    ReplyDelete
  131. Hi Enner, I understand how difficult it can be dealing with a problematic phone but swearing and ranting on my blog isn't an appropriate place to vent your frustrations so I needed to delete your comment. Feel free to participate in the conversation, though, as long as you keep it clean and professional. Thanks!

    ReplyDelete
  132. Hi Andrew, holding all three buttons until it turns off and then releasing the power button while still holding the volume buttons down didn't work to get you into the bootloader screen? Even with a locked bootloader you should be able to restore the original Verizon stock OS.

    ReplyDelete
  133. hey Ive done the 15.1 install because none of the others would do it with out errors but my phone still boots into red eye, do you have any advice on how to fix it?

    ReplyDelete
  134. Hi B. Chaps, sorry but I don't have much experience with 15.1 since I moved over to Cyanogenmod some time ago. If you have the inclination and technical acumen, I'd recommend ADB: https://developer.android.com/tools/help/adb.html

    ReplyDelete
  135. My error

    sending 'boot' (10240 KB)...
    OKAY [ 0.801s]
    writing 'boot'...
    Preflash validation failed
    FAILED (remote failure)
    finished. total time: 1.097s

    ReplyDelete
  136. Never Mind! I tried VZW_XT907_4.4.2-KDA20.62-15.1_1FF and that one worked.

    ReplyDelete
  137. Thanks for the update, My friend is facing this issue lets see how does this work for her.

    Verizon (VZ)

    ReplyDelete
  138. whenever i restart my phone it start in download mode.. please help after holding volume keys with power key i start in normal powerup.. i have tried your above method and it was successfully completed.. but the problem still exist i don't know what to do.. please help

    ReplyDelete
  139. mr. bluecoat please help me i have no earthly idea how to run with step#12 because every time i type a code in it says bootloader variable not supported and that it can't determine the partition type PLEASE HELP

    ReplyDelete
  140. Hi Azmat, try booting into safe mode: https://www.verizonwireless.com/support/knowledge-base-63868/

    ReplyDelete
  141. Hi Robert, it sounds like you're not using the Motorola version of fastboot. If you're sure it's the Motorola version, try each of the three options in Step 10 to find a match for your current phone's firmware.

    ReplyDelete
  142. hello mr. bluecoat, i have a motorola droid razr m (xt907) and it has been stuck on the "Droid" eye for almost over a week i have tried every option in step 10 and two out of three of them both cfc files say they were downgraded versions of Gpt. also the fastboot -w works but only to the extent where it says that it erases the data but still fails(which i dont understand how that is possible) and i believe thats why the rest wont work because for all of the following ones it says the bootloader variable is not supported. i've tried to unlock my bootloader with the fatboot oem get_unlock_data code but it says that it could not access the code. i have also tried us rsd lite v6.1.5. . The newest verison of the download (the last resort one) can't even get past the gpt.bin it says that the phone return failed. Please if you have any advice I really hope you can help save my phone

    ReplyDelete
  143. Also my device serial number came up how does that fit into this whole equation?

    ReplyDelete
  144. still the same.. it is restarting in download mode.

    ReplyDelete
  145. sticky bit factory_fastboot it is showing this reason and its starts automatically in fastboot

    ReplyDelete
  146. ok Mr.Blue Coat ive figured out that i was setting the command prompt up wrong from your previous comments (thank you for that by the way) but now the fastboot -w says that it failed to erase partition.and when i try to flash partition gpt.bin it says that it sends the partition and that it writes the partition but when it gets toward the end of the command it says that it failed to program partition table. Do you have any advice on what it going wrong and how i may fix it?

    ReplyDelete
  147. Hi Robert, can you post your exact error message when running "fastboot -w"? Also, when your phone is in fastboot mode, does it say the device is locked or unlocked?

    ReplyDelete
  148. Hi Azmat, if your phone keeps restarting in "download mode" (a.k.a. bootloader mode) it means the flashing didn't "stick". Do you get any errors from the steps outlined in my original post? Are you running "fastboot continue" at the very end or just turning off your phone?

    ReplyDelete
  149. Hi, Mr. Blue Coat when my device is in fastboot mode it says "device is locked" and when i try fastboot -w the command prompt says "erasing "userdata" then Failed to erase partition and FAILED (remote failure)"

    ReplyDelete
  150. Hi Mr.Coat. Your tutorial work on me. I have a new XT907 with OS Kitkat 4.4.2 Build 183.46.15 Kernel 29 July 2014 and Bootloader not Unlock
    But i wanna to ask, can my device to downgrade OS Kitkat Build 183.46.10 Kernel 1 May 2014 ??

    I want to Unlock my Bootloader to use CyanogenRom.
    Gbu :)

    ReplyDelete
  151. Hi Yohanes, once you upgrade to .15 you can't downgrade to .10. Sorry!

    ReplyDelete
  152. Thanks for your answer Mr.Coat :)
    i try to flashing system image .10 its work, but my kernel cant downgrade to 1 May , thats LOL..
    Stuck in Kernel 29 July 2014, but Thanks Mr.Coat :)

    ReplyDelete
  153. Hi Mr. Blue Coat, I seen you've been helping many so I thought I'd ask mine. I've done a very bad thing. Without unlocking the bootloader which seems impossible for this particular build, I flashed cwm recovery. Now my stock recovery's gone. Where can find a copy and guide to flash back to stock recovery.

    It's a

    185.46.10.XT907.Verizon.EN.US
    KPA20.10.1
    Base band: SM_BP_101031.042.32.86P

    ReplyDelete
  154. Brilliant posts well done to you, do you know if there is a way of re enabling the fm module of the razr m. on jb the fm player worked but now on kk its just disappeared.
    Many thanks in advance

    ReplyDelete
  155. Hi Unknown, just download the full 10.1 stock image (http://drdevs.com/devs/FXZ-files/XT907%20%28Droid%20RAZR%20M%29/VZW_XT907_4.4.2-KDA20.62-10.1_CFC_1FF.xml.zip) and extract the recovery.img file from the zip file and run: fastboot flash recovery recovery.img

    ReplyDelete
  156. P.S. There are a lot of FM apps on the play store: https://play.google.com/store/apps/details?id=com.motorola.fmplayer&hl=en

    ReplyDelete
  157. Hi Bluecoat, is KDA and KPA recovery image the same? Please confirm before I proceed. Thanks for your help.

    Nik.

    ReplyDelete
  158. Hi Nik, I'm not sure I understand what you mean. The stock recovery image is included in the zip files listed above.

    ReplyDelete
  159. Hello again Mr. bluecoat, I meant the link you gave for download is for KDA build version but the rom in my phone is a KPA build. Would the recovery in 2 different builds be different? Thank again.

    ReplyDelete
  160. Hi Nik, thanks for the clarification. You should be fine with the KDA version.

    ReplyDelete
  161. OK, I tried but it just says waiting for device. Nothing happens.

    ReplyDelete
  162. Does the "fastboot devices" command indicate the device is detected by your computer? It's possible you don't have the necessary drivers installed to connect your phone properly.

    ReplyDelete
  163. I would just like to say thank you so much for this post!! I followed these steps after my Droid Razr M got locked up in the load up screen starting up. Almost immediately not only was it working but the phone was actually functioning about 2x to 3x faster than before!! Not to mention it got rid of a lot of crap apps I didn't even use! Thanks again so much, it really helped me out and saved me a lot of money!!

    ReplyDelete
  164. hi mr blue...i cant access my tethering hotspot on my device(droid T912)...anytime i try to activate it. it goes blank..can u help....??

    ReplyDelete
  165. Sorry, I'm not familiar with that setup.

    ReplyDelete
  166. Mr.blue i cant unlock the bootloader and root my phone i am running kitkat and sys ver 183.46.10. I have tried many ways but i cant get it unlock plz plz tell me a working way so i can flash custom roms

    ReplyDelete
  167. And i am facing one more problem whenever i shut down my phone and tries to power it on it goes into AP fastboot mode again and then again untill i press the three keys and select the option normal power.
    Plz tell me solution

    ReplyDelete
  168. Mr.blue waiting for your reply .
    Thankx in advance

    ReplyDelete
  169. Hi Shayan, unfortunately I'm not familiar with that issue. Perhaps try the Motorola forums.

    ReplyDelete
    Replies
    1. But atleast tell me different way to unlock the bootloader of my device towelroot is not working but i successfully rooted my device using kingo root now all the root apps are working fine but i cant unlock the bootloader using motopoclypse apk and zip both not working plz tell a different method

      Delete
  170. and can i flash the 4.1.2 (JellyBean): VRZ_XT907_9.8.1Q-94-1_CFC without unlocking the bootloader.My device is rooted but bootloader is locked waiting for reply.......

    ReplyDelete
  171. i tried manually flashing my droid RAZR M and ended up with no status or mac address can you help me please

    ReplyDelete
  172. Hi Shayan, as you indicated, kingroot (http://forum.xda-developers.com/android/apps-games/one-click-root-tool-android-2-x-5-0-t3107461) appears to work for rooting the Razr M but there are no bootloader unlockers that I know of: http://forum.xda-developers.com/showpost.php?p=62590819&postcount=724

    ReplyDelete
  173. Hi William, did any of the steps in my original tutorial above throw an error?

    ReplyDelete
  174. But can i flash the 4.1.2 (JellyBean): VRZ_XT907_9.8.1Q-94-1_CFC without unlocking the bootloader?

    ReplyDelete
  175. You can flash the *same* stock OS as the one currently on your phone without unlocking the bootloader. If it doesn't work for you, I'm out of advice. Sorry.

    ReplyDelete
  176. I am running android 4.4.2 kitkat sys. ver 183.46.10 on locked bootloader so which stock os should i use.
    thankx for your help.

    ReplyDelete
  177. Hi Shayan, as indicated in my original tutorial: http://drdevs.com/devs/FXZ-files/XT907%20%28Droid%20RAZR%20M%29/VZW_XT907_4.4.2-KDA20.62-10.1_CFC_1FF.xml.zip

    ReplyDelete
  178. But why cant i flash 4.1.2 (JellyBean): VRZ_XT907_9.8.1Q-94-1_CFC without unlocking the bootloader?

    ReplyDelete
  179. By the way mr.blue u r the best ..... !

    ReplyDelete
  180. For some reason, my phone rebooted this morning and then became stuck in the reboot.

    Spent a couple of hours with Verizon -- no joy -- and a couple of hours on the phone with Morotola -- also no joy.

    Then I found your site.

    I downloaded everything and followed each of the steps. In each case, I received an exit line saying successful. However, in response to the fastboot continue command, phone went into reboot and, again, hung there.

    So I thought I'd try it again. (If at first . . . .) However, now my PC cannot see the phone.

    AP Fastboot screen says "connect usb" vs. "use connected." Response to fastboot devices is null. When I plug phone into laptop, Windows says "unknown device."

    Could that have something to do with the "erase modemst1" and "erase modemst2" commands?

    Any idea on a fix?

    ReplyDelete
  181. Hi Robert, which version are you trying? Some people start with the first bullet option in #10 and if that doesn't work, they try the second bullet option and finally the third as a last resort. Also, make sure the battery is mostly charged.

    ReplyDelete
  182. Mr.Blue Coat said... help me in flashing my motorola verizon droid razr .
    just help me with all those steps that are needed to follow when updating it. looking forward to your reply.

    ReplyDelete
  183. I did this with 4.4.2 . Everything flashed perfectly but when the phone boots up a few things go wrong. Mobile data doesnt even show up unless wifi is on. And compass won't work either. Im not sure whats wrong wether its the system files or what. Can someone help me with this problem.

    ReplyDelete
  184. And when I pull down the notification bar and tap the icon for the quick settings, nothing happens. I had to use cmd prompt to flash everything because the flash program rsd lite never found my phone.

    ReplyDelete
  185. Excelente! Gracias Amigo... Muchisimas Gracias

    ReplyDelete
  186. I get all the way to the step where I type fastboot devices, and nothing happens - it says permission denied in Mac terminal.

    ReplyDelete
  187. I'm trying to do this now. My XT107 (RAZR M) has been stuck at the eye. In AP fast boot it shows the device is Locked. status Code 0. It had OTA 4.4.2 prior to the problems.

    I cannot install Flash TZ.MBN

    MyImac:VZW_XT907_4.4.2-KDA20.62-10.1_CFC_1FF.xml abcd$ fastboot flash tz tz.mbn
    sending 'tz' (210 KB)...
    OKAY [ 0.023s]
    writing 'tz'...
    (bootloader) Preflash validation failed
    FAILED (remote failure)
    finished. total time: 0.318s

    It also failed on the boot.img step:

    MyImac:VZW_XT907_4.4.2-KDA20.62-10.1_CFC_1FF.xml abcd$ fastboot flash boot boot.img
    sending 'boot' (10240 KB)...
    OKAY [ 0.803s]
    writing 'boot'...
    (bootloader) Preflash validation failed
    FAILED (remote failure)
    finished. total time: 1.106s

    And also failed on the system with this error
    MyImac:VZW_XT907_4.4.2-KDA20.62-10.1_CFC_1FF.xml abcd$ fastboot flash system system.img
    sending 'system' (1108661 KB)...
    (bootloader) Data size exceeds download buffer
    FAILED (remote failure)
    finished. total time: 0.141s

    I ran fastboot oem fb_mode_clear, and got an "OK", but it's still locked.

    I ran oem get_unlock_data and got
    MyImac:VZW_XT907_4.4.2-KDA20.62-10.1_CFC_1FF.xml abcd$ fastboot oem get_unlock_data
    ...
    (bootloader) 9900029504634000#54413539373043
    (bootloader) 33483900000000000000000000#3CD9
    (bootloader) 7DFED579C5920D83E575E342FF1BA6B
    (bootloader) D1BAC#57B8100402000100000000000
    (bootloader) 0000000

    Fastboot continue rebooted, but no change in the phone. Phone is still locked in AP Fastboot. Suggestions?

    ReplyDelete
  188. Hi Snaab78, "Data size exceeds download buffer" sounds like you're not using the Motorola version of fastboot.

    ReplyDelete
  189. Hi Hank, try running "chmod 777 fastboot"

    ReplyDelete

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