[SuperSU] zlatan_k:
HTC M8 Stuck on HTC screen after flashing super SU through TWRP

- Exact device model

HTC, OP6B160, Not carrier branded but being used with Wind (now called Freedom) Mobile in Ontario, Canada operating on AWS bands

- Exact firmware version

I don't know I can't boot into the OS and ADB is having a hard time communicating to pull the info

It says the following in

**UPDATE GOT FASTBOOT TO COMMUNICATE**

(bootloader) version: 0.5

(bootloader) version-bootloader: 3.19.0.0000

(bootloader) version-baseband: 1.29.214500021.11G

(bootloader) version-cpld: None

(bootloader) version-microp: None

(bootloader) version-main: 6.13.631.7

(bootloader) version-misc: PVT SHIP S-ON

(bootloader) imei2: Not Support

(bootloader) meid: 00000000000000

(bootloader) product: m8_ul

(bootloader) platform: hTCBmsm8974

(bootloader) modelid: 0P6B16000

(bootloader) cidnum: ROGER001

(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: 76df2b54

(bootloader) hbootpreupdate: 11

(bootloader) gencheckpt: 0

all: Done!

finished. total time: 0.073s

Bootloader:

*** Software status: Modified ***

*** UNLOCKED ***

M8_UL PVT SHIP S-ON

HBOOT - 3.19.0.000

RADIO 1.29.214500021.11G

OpenDSP-v51.2.2-00593-M8974_F0.1015

OS - 6.13.631.7

eMMC-boot 2048

Dec 12 2015, 16:24:40.0

Android Recovery

HTC/htc_m8/htc_m8 6.0/MRA58K/buildteam11270104

- Exact Android version

Android 6.13.631.7

- Exact SuperSU version

UPDATE-SuperSU-v2.46.zip is what I tried to flash using TWRP

- Interfering apps

none - factory reset OS

- Update methods tried

ZIP via recovery via TWRP for HTC One M8 All Variants from TeamWin website

- What kind of root are you left with?

MY MISTAKE/FORGETFULLNESS - I forgot to create a backup in TWRP before flashing SuperSU (I was lacking sleep and very tired, but still idiotic on my part this one simple step could have avoided so much headache).

Everything worked perfectly fine, TWRP loaded up and was functioning without issues, then when I flashed the SuperSU.zip onto the phone the phone was never able to get past the HTC logo screen. The phone had never had SuperSU on it before this. Furthermore, ADB was no longer seeing the phone (doesn't say no devices found but there is just a blank space under device list) and started giving server errors (server 31 not compatible with client 36 etc). However, the computer still makes a noise when the phone plugged and unplugged or when I go in and out of fastboot, you can hear the computer recognizing the device and FASTBOOT changes to FASTBOOT USB but the phone still doesn't show up on the computer (unless its SD card is inserted then the contents of that SD are visible but as a removable drive not under HTC ONE M8 Device folder like it did before. I can replicate these scenarios if need be and take screenshots of the command prompt. I am not sure if I have 2 versions of ADB and and multiple SDK versions and things which may be conflicting. If someone knows which SDK version, drivers etc is best for my particular model do not hesitate to post. Or if anyone has instructions on where to check to make sure I dont have conficting drivers and ADB versions installed.

Instead of reasearching a solution such as unSU first in my exhausted state. I decided it I would to try and flash the following ROM to the phone which I acquired from the HTC Dev site: 0P6BIMG_M8_UL_M60_SENSE70_MR_HTC_Europe_6.12.401.4_Radio_1.29.214500021.12G_20.72.4196t.01_release_464360_signed

I wasn't thinking properly anymore and should have put the device down before doing this and gone to bed and continued with a clear mind, however I didnt and after loading the above mentioned ROM (downloaded from HTC Dev) through TWRP section it overwrote TWRP, and now I only have the android 6 Stock recovery and bootloader which I am able to still access.

I dont think it successfully flashed the OS from the ROM as it still shows android 6.13 on my phone not 6.12 so I think only the stock recovery and bootloader from the ROM above got flashed but the phone cant seem to boot to the OS. Also, if I try to install that ROM mentioned above from the SD card using the stock Marshmallow Recovery it gives the following errors:

E: footer is wrong

E: signature verification failed

installation aborted

Not knowing how to proceed is what I am essentially left with