I tried a few different methods involving the RUUs but never had any luck:
1. The RUU.exe for my specific phone (telus), always crashed when htc_fastboot.exe stopped responding.
2. Since there was no RUU.zip for the Telus version I extracted it out of the exe and tried flashing manually, but again fastboot stops responding.
3. Tried changing the CID to CWS__001 and using the matching RUU.exe, and while fastboot didn't crash it wasn't able to complete either (can't remember the exact error).
So I decided to use the Telus Guru Reset from htc1guru, which worked fine.
Now I need to get rid of the tampered flag and lock bootloader/s-on, but I can't boot a custom recovery with fastboot boot recovery.img.
I need to boot into recovery to either use the guru bootloader reset tool or to temporarily install superuser, so that I can manually remove the tampered flag.
Tried the latest version of both TWRP and CWM Touch, and also tried fastboot erase cache before each.
Every time fastboot succesfully pushes the img to the phone and outputs booting..., OKAY, and finished, but the phone gets stuck at the bootloader and never actually boots to the recovery (have to force power off).
Any ideas/help would be greatly appreciated.