Hey guys My friend just bought an iPhone from the US. He wants me to unlock it, I do have some brief understanding of how to unlock, activate and jailbreak an iPhone, but I need to know for sure how to unlock. Do I just download the latest version of ZiPhone? Then plug in the iPhone to my computer and go on ZiPhone and click the 'Do It All' button? Is it? Or is there more to it? It's very important; since its not my iPhone.