Unfortunately the device (GPE edition, truly) has S-ON and has an hboot of 1.54. So I see no way to achieve S-Off and I've been failing on any attempt to flash an RUU. tried this both with TWRP recovery 188.8.131.52 and with stock recovery installed. When I had stock recovery my fail was:
FAILED (remote: 24 parsing android-info fail)
I feel like I've tried every permutation of GPE ROM.
My FUBAR HTC One has a CID GOOGL001 and MID PN0712000. getvar all reports:
(bootloader) version-baseband: 4A.18.3263.15
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) product: m7_ul
(bootloader) platform: HBOOT-8064
(bootloader) modelid: PN0712000
(bootloader) cidnum: GOOGL001
The bootloader locks and unlocks at will via oem unlock/lock.
I had this bright Idea that I could do a NANDroid backup if I installed the TWRP on another GPE HTC One M7 I had access to, but it has 4.4.2 and in bootloader,
fastboot oem unlock
(bootloader) [PG_ERROR] htc_pg_part_traverse(839):
(bootloader) invalid traverse range
(bootloader) [PG_ERROR] htc_pg_part_read(1029):
(bootloader) htc_pg_part_traverse failed
(bootloader) [DISPLAY_ERR] sp_custom partition: unlock_disp_buf.img_buf r
(bootloader) ead error!
(bootloader) [DISPLAY_ERR] Can not load custom splash!
(bootloader) Loading custom splash failed!
I followed each thread I could find on this subject and they all seem to die out with comments that there is no solution to this locked bootloader issue at the moment, so I guess no TWRP recovery? I don't care too much about this last issue I just wanted to recover my (well my friend's, who might be reconsidering that status) soft bricked M7. This has been such a fiasco of ID-10T errors! I'm replacing my friend's phone so now I have nothing to loose. I will attack this brick with anything radical that makes sense.
I've been a fairly quiet person on these forums since the first Android phone (G1, still have it, don't use it). I'm on a GPE M8 these days, myself, I didn't give my M8 to my friend.
I greatly appreciate any information anyone has. Thank you.