Can someone tell me how to unlock iphone 3g 3.1.2 on windows. What I have to do unlock it I guess I need to download any software first to unlock iphone 3g 3.1.2 on windows. If no than How can I unlock iphone 3g running 3.1.2 software on windows and blackrain will not run on my laptop .Please help me so that I can use my iphone.