Hey everyone. Just wanted to ask a question about factory unlocked iPhones i saw on eBay. If they are unlocked are there any advantages to getting one when it comes to the jailbreaking or are u still screwed if it is running 3.1. Can u downgrade firmware at any time or is it all the same and just unlocked. Also, I'm looking to get one if ur not locked into 3.1. Suggestions on where to buy besides eBay. Thanks for ur help.