Ok, this is more a general question ... not really specific to me and my needs. Let's say for talking sake, someone has upgraded to the iOS4 GM but wants to go back to 3.1.3 and jailbreak that version until the official jailbreak for iOS4 comes out, how would they go about it? Is it as simple as clicking restore in iTunes and 3.1.3 will be installed? Or is it overly complicated and not worth the hassle? Cheers.