[One (M7) Q&A, Help & Troubleshooting] gizmo_the_great:
Really hoping someone can help me!. I've spent in total about 9 hours over several days battling with my UK based Vodaphone HTC One M7.

In brief, I tried to root it, and something went wrong somewhere as a result of using the wrong version of SuperSU I think and now it's pretty much bricked. Stuck at the bootloader. I'd like to just get it back to normal if possible but it seems impossible to write anything to it to restore it!

I am primarily trying to follow this guidance : http://xdaforums.com/htc-one/general/lollipop-ruu-zip-small-collection-t3053944 . I have downloaded the 'Vodafone_UK_7.18.161.2 (m7_ul edition) MID:PN0710000' which I gather is for VODAP001 phones. I checked the MD5 value : OK. I downloaded it twice, in fact, after the first attempt - I thought maybe the DL went wrong. Still no luck.

The OS was Lollipop 5.2 I think.

Fastboot details report:

Microsoft Windows [Version 6.1.7601]

Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Program Files\Minimal ADB and Fastboot>fastboot getvar all

(bootloader) version: 0.5

(bootloader) version-bootloader: 1.61.0000

(bootloader) version-baseband: 4T.35.3218.16

(bootloader) version-cpld: None

(bootloader) version-microp: None

(bootloader) version-main: 7.18.161.2

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

(bootloader) serialno: HT35WW908227

(bootloader) imei: REDACTED by Me

(bootloader) meid: 00000000000000

(bootloader) product: m7_ul

(bootloader) platform: HBOOT-8064

(bootloader) modelid: PN0710000

(bootloader) cidnum: VODAP001

(bootloader) battery-status: good

(bootloader) battery-voltage: 4337mV

(bootloader) partition-layout: Generic

(bootloader) security: on

(bootloader) build-mode: SHIP

(bootloader) boot-mode: FASTBOOT

(bootloader) commitno-bootloader: dirty-6fa8a15d

(bootloader) hbootpreupdate: 11

(bootloader) gencheckpt: 0

all: Done!

finished. total time: 0.905s

Bootloader reads :

***TAMPERED***

*** UNLOCKED ***

M7_UL PVT SHIP S-ON RH

HBOOT 1.61.0000

RADIO-4T.35.3218.16

OpenDSP-v35.120.274.0718

OS-7.18.161.2

eMMC-boot 2048Mb

FASTBOOT USB

...

I need the VODA0001 stock ROM I gather. I downloaded the one from here (https://www.androidfilehost.com/?fid=95916177934540895), renamed to RUU.zip, put bootloader to FASTBOOT USB mode, and did the usual attempts by fastboot flash zip RUU.zip but keep getting :

C:\Program Files\Minimal ADB and Fastboot>fastboot.exe flash zip RUU.zip

sending 'zip'... (43287 KB) OKAY

sending time = 3.250 secs

writing 'zip'... (bootloader) adopting the signature contained in this image...

FAILnot allowed

FAILED (remote: not allowed)

Execution time is 4(s)

I also tried using the "htc_fastboot" exe from https://www.androidfilehost.com/?fid=95916177934539737 (though it says it is fastboot.exe not htc_fastboot.exe) without success, and it also complained that the file was larger than 1.5Gb, whereas the stock fastboot.exe does not complain but does not work.

I have looked for a suitable CWM restore image from http://xdaforums.com/showthread.php?t=2207874 as suggested in http://xdaforums.com/showthread.php?t=2247292 where NUTKILL states that due to cidnum value being HTC001 (for that user) he should get one from there. But there does not appear to be one for cidnum: VODAP001.

The current status is that if I just power the phone on normally it "hangs" at the "htc - powered by android" white screen. I gather that might mean it is not destroyed and may be recoverable, but all the same, I am lost!!

My HTC One M7 is a Vodaphone mobile.

I am new to this kind of thing so any guidance warmly received. I really hope I have not ruined a £500 device!