I purchased an iPhone 3g used and it came with some great apps from the Appstore. How can I back these up from my iPhone so I can then upgrade to 2.2 and unlock with yellowsn0w? Better yet, is there a way to do it? I tried to sync and back up in itunes, but it doesn't do it. I am currently running 2.1 with 2.11.07 and using a t-mobile SIM with a Gevey proxy SIM and everything runs great. I would almost not unlock if I couldn't save the apps, its about $300 worth of appstore apps. Any thoughts?