I have 3gs new bootrom in iOS 5.0.1 BB 6.15.00 i contact to the imei unlocker they said that iphone must be have 5.13.04 to factory unlock so if i downgrade bb so it will brick my radio
I believe if it wasn't compatible, the radio would've been messed up when you or whoever updated it to the iPad baseband (6.15.00) in the first place