I have a iphone 3g jailbroken on 3.0 and at&t, and im looking to upgrade to 3.1. i have a mac and pwnage tool. however, when i get to the step where i change the general settings to uncheck "activate" and check "enable bandwidth upgrade", i cannot check the upgrade bandwidth box because it is "grayed out". all of the guides ive seen say to check off that box and uncheck the "activate" box if youre on at&t, but i cant check off the right box. also, under bootneuter, unlock is check off and grayed out too. what do i do so that when i restore to it my at&t phone is activated? i dont need it unlocked, if that matters any.