My wife's boss gave her an iPhone 2G that she has never even activated. I ran it through iTunes, which of course wanted me to activate it with AT&T. I want to unlock it so I can use it with Claro PR. I tried a tutorial on how to update to 3.1.2 but it gave me error 1604. I cant even get the phone in iTunes to be recognized so I dont know which firmware it has! Can someone help me unlock/jailbreak this thing?