usb stopped working

[lawreaga]

I recently updated my firmware to colonel's 3.5 sprint final on my ppc6700. everything ran great for a few days but all of sudden the usb stopped working. it does not charge nor does it activate active sync when its connected to the computer. I've tried with different usb wire and different chargers, soft reset, hard reset, restarted my computer... almost everything. and still the same result. maybe my usb just broke and have nothing to do with the hacked aku firmware since I had the phone for a year... I plan on going to the sprint store to exchange it for another one today but I want to reset the phone to original firmware before doing so. but the usb problem is preventing me to do that. anybody have any ideas?