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Root HTC One M8 unusable!

Discussion in 'Android Devices' started by Pierce Gilliland, Feb 3, 2016.

  1. saltire

    saltire Android Expert
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    Before trying this, I just want to make sure. Were all the steps you completed successful, including the TWRP restore? Also, might be a bit of a long shot but try removing the external sd card and rebooting, and the sim card and rebooting. Worth a shot to keep your internal storage intact (if it's still ok anyway).

    If all else fails then I found this signed RUU that you can install - but this will do a complete wipe of your phone. Download the files in this post:

    http://forum.xda-developers.com/sho...b634df425888c700e71036&p=64926626&postcount=6

    to your PC, and follow the instructions to install the downloaded RUU. When you enter the:

    fastboot oem rebootRUU

    command, the phone should go into HTC RUU mode - you will see black screen with HTC in grey in middle, and probably a green progress bar below as the RUU components are flashed. The phone may also reboot itself a few times, and I think should reboot itself once process is complete. If it doesn't just do:

    fastboot reboot

    Edit: Note that I'm not sure you need to use the htc_fastboot.exe, as normal fastboot works just fine for me when flashing firmware zips with the phone in RUU mode (but I have s-off so maybe it's needed). It won't hurt to use it.

    If the above doesn't work, and if you have a sd card reader and micro card adapter you can also try the following.

    Rename the RUU zip file to exactly 0P6BIMG.zip (the first character is a zero, not a letter O - fifth is capital letter I, not a number one) and copy it over to the root (top level directory) of your sd card - i.e. not in any folder or sub-folder on your sd card. Make sure in Windows Explorer that you turn off the option to hide extensions for know file types - you don't want to end up renaming to 0P6BIMG.zip.zip.

    Insert the sd card back in to your phone and reboot the bootloader in to HBOOT mode. HBOOT should automatically recognise the 0P6BIMG.zip and start working through the install.

    Both may take a while to run through.

    Let us know if it works ok.
     

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    #26 saltire, Feb 11, 2016
    Last edited: Feb 11, 2016
    Pierce Gilliland likes this.
  2. Pierce Gilliland

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    I forgot to mention that i installed the TWRP from the sd card. the guide said to go into restore and find it but nothing was there. i went into install and found it there. Im not sure if this would make much of a difference or not. Maybe i was supposed to install then restore it.

    removing sd card or sim doesnt do anything.
     
    #27 Pierce Gilliland, Feb 11, 2016
    Last edited: Feb 11, 2016
  3. saltire

    saltire Android Expert
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    I've a feeling you may have restored something from the internal sd card, rather than the backup you downloaded and saved on to the external sd card. In step 4 you need to change the location TWRP will look for the Stock_Backup to be the external sd card first, in TWRP Restore screen press on the line of text that says something about storage location and select External SD Card from pop up window.

    Edit: then you need to press on the Stock_Backup that is listed, and then make sure that System, Boot and Data are all selected (ticked) before swiping to start the restore.
     
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  4. Pierce Gilliland

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    ok, i can try to do that. How do i access TWRP again?
     
  5. saltire

    saltire Android Expert
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    If you did Step 5, you're going to have to repeat Step 3. Can we just review things though:

    Step 1 - files downloaded ok?

    Step 2 - you have right folder structure set up with extracted backup files placed in Stock_Backup folder?
     
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  6. Pierce Gilliland

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    yep, step 1 and 2 all good
     
  7. Pierce Gilliland

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    ok it's worked, i have a backup from jan 20th im installing so all seems good so far.
     
  8. Pierce Gilliland

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    Thank you saltire, you have been very helpful. I hope i wasn't too much of a nuisance ;)

    The issue was me not selecting microsd in the restore section of TWRP. I didn't realise i had to tap on internal storage near the top and change it before restoring.
     
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  9. saltire

    saltire Android Expert
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    Good stuff. It was covered in Step 4 ;) but I'll update the text to try and make it a bit more obvious next time (I run a theme on TWRP so it has a different look/layout from the stock UI).
     
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  10. Granite1

    Granite1 Zercron Encrusted Tweezer
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    Awesome, nothing better than a successful save! Good job.
     
  11. riaz trikam

    riaz trikam Lurker
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    hi
    i tried to restore my htc m8 to stock but i get a error

    C:\Users\riaztrikam\Desktop\adb fastboot>fastboot devices
    FA46KWM12346 fastboot

    C:\Users\riaztrikam\Desktop\adb fastboot>fastboot flash recovery twrp-2.8.6.0-m8.img
    target reported max download size of 1826414592 bytes
    sending 'recovery' (17034 KB)...
    OKAY [ 1.848s]
    writing 'recovery'...
    (bootloader) signature checking...
    FAILED (remote: signature verify fail)
    finished. total time: 2.460s

    C:\Users\riaztrikam\Desktop\adb fastboot>

    from here i cannot get into recovery ie it just restarts to bootloader
    my phone is relocked -security warning s-on

    any help is appreciated

    thanks
     

HTC One M8

The HTC One M8 is the Taiwanese company's flagship phone for the first half of 2014. It built on its predecessor with an upgraded 5-inch 1080p display, Snapdragon 801 processor, 2GB of RAM, 32GB of internal storage, and an UltraPixel rear Duo Camera.
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