I'm trying to figure out how to jailbreak and unlock my iPhone 3g. Currently it's on stock 4.2.1, and baseband 5.15.4. I know I need to upgrade to the iPad baseband, and will probably loose GPS by doing that, but it's not a big deal. I'm just not sure exactly how to do that. I've tried searching, and most threads that I find are for the 3gs, not 3g, I'm also getting more and more confused the more I search. I'd appreciate it if someone could link to a nice step by step guide to do it. Thanks.