I have my iPhone 4 jailbroken and unlocked on 4.01 and something went wrong cause the phone shut off and wont turn on. It just goes to the apple screen then sits there for a few seconds and shuts off. I want to retore it but i cant cause itunes says the 4.01 custom firmware isnt compatable. How do i get around this? Or is there any other way to update it but keep it unlocked and jailbroken?