Same problem with me too...
A friend of mine did something with his HTC ONE M7_UL & got into a bootloop
**TAMPERED**
**UNLOCKED**
M7_UL PVT SHIP S-ON RH
HBOOT 1.44.0000
RADIO 4A.14.3250.13
openDSP v26.120.274.0202
eMMC-boot
Apr 12 2013
Serial No. SH34******6
IMEI 3544*********15
Model-id PN0710000
CID HTC_001
SECURITY ON
BUILD MODE SHIP
BOOT MODE FASTBOOT
GETVAR ALL FAILED (STATUS READ FAILED (TOO MANY LINKS)
I tried to solve it with almost all the methods mentioned in this thread.
Deatils are as followed:
------------------------
fastboot erasing cache...okay (0.047s)
fastboot erasing userdata...failed (remote not allowed)
fastboot erasing system....failed (remote not allowed)
fastboot reboot bootloader....nothing happens
fastboot oem rebootRUU....okay (0.031s)...(HTC goes into HTC Grey logo screen)
fastboot flash zip rom.zip......sendin zip...(1176263 KB)...OKAY
(booltloader) zip header checking...
(booltloader) zip info parsing...
FAILED (remote 24 parsing android-info fail)
FINISHED
i tried with 5 roms matching my CID & model-id & all were for S-ON ( as i am also S-ON)
I am able to boot into recovery (TWRP)...did a hard reset also but in vain....
also tried pushing ROM's so that i can install zip from recovery but sideload also...cannot mount
UNABLE TO ADB anything...except for fastboot mode
i also tried with many compatible RUU.exe...again failed
i tried flashing the advanced CWM philz recovery....FAILED (remote: 12 signature verify fail)
I guess I know the problem...(there is no OS installed) & (there is no BUILD NUMBER)
BUT...how do i solve it?
OR is it a hardware problem?
I am using Windows XP as well as Windows 7 on 2 different machines.