1. freshminh's Avatar
    Hello!

    So I just got a refurbished AT&T HTC M8 to replace my stolen one, and decided to try and root my phone for the first time. Unfortunately, I fell into the common mistake of using the outdated Hasoon2000 All-in-one toolkit and now have a soft bricked phone. Once I make it past the HTC One logo screen, the phone constantly states the message: "unfortunately AT&T ready2go/system UI has stopped" and I am forced to power off my phone. I have tried running the RUU but with no avail. When I run my phone in fastboot and use the most recent .exe from the HTC website, it goes through the first loading screen and then nothing happens. I have downloaded the drivers and ran the .exe as an admin, but still have not gotten past the first loading screen. Am I missing something? Do I need S-OFF or to do something else? I have research in the forums, but have still not found an answer. I would greatly appreciate some guidance/clarity as I am still new to all this and want to learn. Thanks!

    Here is what my Hboot says:
    *** Software Status: Modified ***
    *** RELOCKED ***
    M8_UL_CA PVT SSHIP S-ON
    HBOOT-3.19.0.0000
    RADIO-4.0.U605611@50319A
    OpenDSP-v47.2.2-00564-M8974_F0.1024
    OS-
    eMMC-boot 2048MB
    AUG 4 2015, 23:21:05.0

    ---
    (bootloader) version: 0.5
    (bootloader) version-bootloader: 3.19.0.0000
    (bootloader) version-baseband: 4.0.U605611@50319A
    (bootloader) version-cpld: None
    (bootloader) version-microp: None
    (bootloader) version-main:
    (bootloader) version-misc: PVT SHIP S-ON
    (bootloader) serialno: xxxxxxxxxxxx
    (bootloader) imei: xxxxxxxxxxxxxxx
    (bootloader) imei2: Not Support
    (bootloader) meid: 00000000000000
    (bootloader) product: m8_ul_ca
    (bootloader) platform: hTCBmsm8974
    (bootloader) modelid: 0P6B12000
    (bootloader) cidnum: CWS__001
    (bootloader) battery-status: good
    (bootloader) battery-voltage: 0mV
    (bootloader) partition-layout: Generic
    (bootloader) security: on
    (bootloader) build-mode: SHIP
    (bootloader) boot-mode: FASTBOOT
    (bootloader) commitno-bootloader: 7f8e91a3
    (bootloader) hbootpreupdate: 11
    (bootloader) gencheckpt: 0
    07-09-2016 03:56 PM
  2. Golfdriver97's Avatar
    Welcome to the forums. I gave a reply in a similar thread. http://forums.androidcentral.com/sho...d.php?t=698081
    I have soft bricked my AT&T HTC M8, what can I do to revert back to stock?
    07-09-2016 04:11 PM
  3. freshminh's Avatar
    Hi! Thanks for your reply. So I have already downloaded the latest AT&T M8 RUU from the HTC website but I do not get anything after the first loading screen (set-up/install wizard) after I load the .exe file. I have done this multiple times and re-downloaded the RUU twice. I am running the .exe as admin and in Fastboot USB on relocked Hboot. Also double checked that I have the correct RUU for my phone's model (M8_UL_CA for AT&T [US]). Any other input on what else I can do to get the RUU to work? I've also tried using different USB wires/ports and on a friend's computer. Not sure what the issue is...
    07-09-2016 07:21 PM
  4. Golfdriver97's Avatar
    Hi! Thanks for your reply. So I have already downloaded the latest AT&T M8 RUU from the HTC website but I do not get anything after the first loading screen (set-up/install wizard) after I load the .exe file. I have done this multiple times and re-downloaded the RUU twice. I am running the .exe as admin and in Fastboot USB on relocked Hboot. Also double checked that I have the correct RUU for my phone's model (M8_UL_CA for AT&T [US]). Any other input on what else I can do to get the RUU to work? I've also tried using different USB wires/ports and on a friend's computer. Not sure what the issue is...
    Sorry about the delay. Long day at work yesterday.

    I think the only thing I can suggest is redownloading the file, and trying again. I only have done an RUU once and everything launched flawlessly.
    07-10-2016 09:13 AM
  5. freshminh's Avatar
    Just tried it twice more with two re-downloaded files and no success I'm not sure what to do anymore. I've been searching for a solution or another thread with a similar situation, but haven't found anything. Are there any pre-requisites on my phone to run the RUU such as having S-OFF? Or should I be able to run it regardless?

    Is there anywhere else I can look for help?

    Thank you for your help by the way; I appreciate it!
    07-10-2016 05:07 PM
  6. Golfdriver97's Avatar
    Just tried it twice more with two re-downloaded files and no success I'm not sure what to do anymore. I've been searching for a solution or another thread with a similar situation, but haven't found anything. Are there any pre-requisites on my phone to run the RUU such as having S-OFF? Or should I be able to run it regardless?

    Is there anywhere else I can look for help?

    Thank you for your help by the way; I appreciate it!
    I don't think S-Off is required. If you search on YouTube for reflashing with adb commands, maybe that might work a little better?
    07-11-2016 02:02 PM

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