No, you don't need "disk drive" mode. You want the phone to be in "fastboot" mode, which is what steps 2 and 3 will do.
I've never run an RUU, but I'm pretty sure that you don't need HTC Sync because (a) the phone isn't running Android during this, and (b) SUroot would have said if anything else was needed (he's the guru here).
I've never run an RUU, but I'm pretty sure that you don't need HTC Sync because (a) the phone isn't running Android during this, and (b) SUroot would have said if anything else was needed (he's the guru here).
