problems to S-OFF ? Firewater worked for me
After my HD2 got a hardware problem I changed to HTC One M7 international with H-BOOT 1.55 and OS- 3.62.401.1
Unlocking was easy but I failed with almost all how to's to S-OFF. Until I found the Firewater method.
This one worked for me. In case someone still has the same problem. It cost me too many tries to find this solution... Maybe this helps.