I am attempting to upgrade my jailbroken, unlocked 3g to 4.1 using pwnage. i think the jailbreak went OK, but, since it now isn't unlocked (I believe I missed a setting in pwnage), itunes won't recognize the phone and it is in emergency mode, so I can't get on it to unlock it. Can I restore from the backup I made before attempting the upgrade? It was jailbroken and unlocked when I made the backup. If I ca, how do I go about restoring from backup?