Bro, i need your help. I am trying to update my friends iPhone 3gs, Unlocked on Tmobile. He wants the newest 4.0.1. I know i will have to rejailbreak and unlock his phone again. How will i update his software without iTunes doing it for me. I don't think iTunes will let me use my computer to do an update on his Unlocked iPhone. How do I get around this. Thanks for the help.