hi i've come here looking for help to try recover my htc desire. it was unlocked and everything was ok except for voice calls. i decided to upgrade it and everything has gone so horribly wrong. ugh. my phone wont upgrade the rom, everytime it does it crashes with the triangle and question mark. error message certificates cant be veriified abort installation. im using windows vista 32bit, and the phone is android 2.2. ive tried the official htc ruu and i contacted htc's website and did what they said, format sd card and reset but still no good. atm all i can do is internet i can no longer text or make calls. any ideas on how i can resole this. is it possible to reflash my phone back to android 1.0.? thanks 