Using an HTC One (M7) on the VZ network, recently installed TWRP and ViperOne. Flashed the ViperOne ROM and am now stuck in a bootloop, start at the HTC One screen with a message about development purposes only. Can access bootloader and TWRP. Attempted clearing cache as that's what threads with similar problems had, no avail. Attempted to flash the ROM in fastboot to no avail either.
Anyone been have a suggestion?