Originally Posted by dhkr234
(speculation that the opening poster's method doesn't work; the post wasn't quoted as-is because it contained unnecessary flaming.)
I spoke to HTC this morning, and it took a LONG time to reach somebody who was familiar with this.
ACCORDING TO THE TECH (and I have no idea whether he was telling it to me straight or making things up), the problem is hardware-related. According to the rep, about one out of five of the suspect chips are actually defective; the other 80% are fine. Put into simple terms, the defect may cause the chip to be written to incorrectly, which may or may not corrupt things up to and including "bricking" the phone. The rest is summed up as best I can:
1) Not all defective chips will go bad. It depends on how the phone is used. Repeatedly flashing ROMS and such will definitely speed up the process.
2) If the phone gets bricked, and the chip is still usable, re-flashing may fix it. Of course, if the chip isn't usable anymore, the phone is finished.
3) The rep recommends that if you get the bricked phone messages while flashing, you should attempt to flash "stock" back to it (i.e. Froyo 2.2.1, Gingerbread 2.3.4 etc.: what HTC put on the phone in the first place or sent OTA). If this works, do not attempt to root or modify it again. If it's in warranty, get it replaced. If it isn't, leaving it on stock will give the chip the best chance to not get any worse.
Again, this is what I was told. I'm not a phone geek, so I have no idea if what he said was true or even possible.