Hey Guys, thanks in advance for any help.

Currently my HTC One (International) is stuck in a kind of 'soft brick'. I can boot into recovery mode (Using TWRP at the moment, also had CWM working a few hours ago) but can't flash any ROM. I don't have any ROM.zip files on the SD card, and even if I did I can't mount the sd card.

ADB sideloading doesn't work either. Using TWRP it just says ADB failed and gives me option to reboot. Sideloading doesn't work with CWM either. I can't mount OTG USB either. I tried flashing a RUU but am in S-ON at the moment, so that won't work.

I have done multiple wipes etc. and tried various different recovery software.

My current last ditch plan is to try and get S-OFF and flash an RUU. Otherwise I'm not sure what to do.

Any help/advice appreciated.