I have an HTC Desire Z stuck in bootloop.
It's an unrooted, S-ON version.
I have tried the PC10IMG.ZIP via SD card route to no avail - don't know if that's because I couldn't find the right RUU. It seemed to get stuck at user data deletion.
I've now downloaded ADB and fastboot and managed to get the device recognised, but I have no idea how to go on. (All very new to me!) I am also having difficulties finding the right RUU/ROM for this. I *think* I found it on htcdev.com as 2.42.405.4, although it's in a tar.gz extension that I am not sure how to extract.
Another issue is that occasionally whilst in fastboot the phone seems to time out / switch off for no particular reason. It shouldn't be a battery issue but I am letting it charge for a bit just in case.
Anyone has any idea of how to progress? Would reeeeally appreciate it!