Hello, I have just bought a iPhone 3GS, and it has a data plan and everything. The problem is that is came on the firmware 3.1. I need to upgrade it to 3.1.2 to use the sn0wbreeze method. Is it possible to upgrade? It is on the old bootrom. And I am not a n00b at this, as I have a iPod touch 3G ios 4 jalbroken. Thanks a lot for your help and replies!