I'm sorry to be asking this but I am completely new to this. I have an iPhone 3G that I am using on T-Mobile USA. It's currently running 2.2 and I want to upgrade to 3.0 when the tools get released (I'm assuming they still aren't). Do I need to format the iPhone and restore it so that it is locked before I upgrade to 3.0? If so, how do I do that?
Thanks in advance!