Something goes wrong and I need to restore for whatever reason? I was able to find an iPhone 4 running FW 4.0 and has the 01.59 Baseband. Its a good price and I really want it over my 3GS that I'm using on t-mobile. I was just curious what needed to be done should something like the above happen. I would hate to buy it and just my luck something happens and then be out of luck. Thanks for any assistance!