I unlocked my dad's 3g 2.2 iphone 2 weeks ago, but the next day he accidentally updated to 2.2.1. Now the baseband is stuck at 2.30 no matter what firmware i downgrade to. I have tried using custom firmwares that neglect the baseband, until i found out that mac created custom firmwares dont work on xp. BTW I am using Xp. Help!! he is thinking of signing a new two year contract with att. I need a way to downgrade the baseband back to 2.28 either on firmware 2.2 or 2.2.1. Is this possible?