It started with the "we have determined that your phone may be running a modified version of its system software. For your protection we cannot update your phone. Please revert your phone to the official HTC system software" problem.
I went ahead with the firmware upgrade to 3.33 according to the instructions
posted here. I placed the PG58IMG.zip on the sd card root, went to the bootloader mode, did the update and ... after reboot go in to the boot loop (power up, HTC logo, vibe, off... and again). When I pulled out battery and put it again, phone does not light up the display at all, but you it still does periodically vibe.
Cannot to the boot loader mode (pulling out batter does not help) and the device is not visible when connected via USB. I've just tried to run the "adb reboot recovery" but get "device not found" error. What can I try to recover it?