Hey, I have an iPhone 3gs that I just bought online. It is previously owned and the seller restored to iOS 5.0.1 with a baseband of 5.16.05. So, I've heard the only possible way for this current setup at this time to be used on T-Mobile would require the baseband be upgraded (which may damage the phone) This is a 2009 model so hopefully that will not happen. Does anyone know of a really simple clear cut guide to doing this? I was thinking of watching everythingapplepro's videos but if there is something better out there, please let me know, thanks.