Ive got a HTC One here with the problem mentioned in the title. The phone is completely stock, locked bootloader, not rooted, S-ON.
The phone does not get past the HTC screen at all, it stays there for a few seconds and turns off. I can get into the bootloader, but cannot get adb to work. However fastboot is working fine.
Ive tried to unlock the bootloader so that I can try to get a custom recovery and install a ROM that way, but everytime I try to unlock it it restarts and gets stuck again. Comes up as locked once back into the bootloader.
Tried flashing an RUU, but the ones Ive tried bring up a singature failed error, I assume due to the locked bootloader.
Searched, looked, and read through many threads/posts for the past few hours and I cant find anything to help me.
This is what getvar all brings up...
version-misc: PVT SHIP S-ON
Please help! Im stuck...just like my phone is![/QUOTE
What RUU did you try. Link please
With S-On you can flash RUU same version or higher, it will not allow you to flash RUU lower version
Have you tried a hard reset from within the bootloader or fastboot erase cache or the bright light trick. If that fails are you still within warranty, if so send it in for service.
Sent from my HTC One using XDA Premium HD app