Had a hell of a time unlocking in the first place. If I upgrade to 2.1 in iTunes, the iPhone should be back in jail, but still unlocked, right? I should just have to jail break it again? I would leave it alone but a number of the free apps in the appstore won't install on 2.0.2. They require 2.1 and say so on install. I'll leave it alone anyway if it involves trying to unlock the damn thing from 2.1 again.