Originally Posted by markinsf
Hey... I don't know why I didn't make a backup... stupidity... but I flashed a non-Sprint ROM to my Sprint HTC One phone with TWRP and now when the phone starts I am stuck on the HTC One logo.
I've tried various things to resolve the issue but none have worked. Fastboot sees the phone just fine but I cannot get ADB to see the device or do a sideload. I've tried installing the latest HTC drivers repeatedly but my Device Manager just says "One" for the detection of the device.
I am really frustrated and willing to buy someone a beer if they can help me sort this out. Any other steps I can take? Thank you.
Download a Sprint HTC One RUU and boot into fastboot mode. Run the RUU and wait a few minutes for it to do its thing. Note, it will wipe your phone clean. Another option, if you can boot into recovery mode, is to uninstall the HTC drivers and install universal ADB drivers from http://koush.com/post/universal-adb-driver
(sideload doesn't work with official HTC drivers sometimes) and sideload a compatible ROM.