Hey guys so I'm looking to buy an iPhone 4 on Craigslist and the one's in my price range aren't unlocked and are almost all updated to 5.1 or 5.0.1 and I'm looking for ways around this. I've been reading about how you can get it legitimately unlocked in the AT&T store, but how would I go about that if it's not my name on the contract with the iPhone? Any tips with using the AT&T route? Not really sure about this avenue... Does it even work with the new update? Also, I've been doing some research and was wondering if, when I get this new iPhone, would downgrading to 4.x.x work like it does for the 3GS? I obviously wouldn't have any blobs saved or anything, but is there a way to use a custom IPSW for iOS4 that would change the baseband/make the phone unlockable via Ultrasn0w? Thanks for the help guys! I'm just new to the iPhone 4 unlocking process, but I've been unlocking my 3GS's for a few years now; so I apologize for not knowing as much as I should.