Yup, we made it for yea!! It is now possible to use your 3GS iPhone with 3.1.3 O.S and 5.12.01 as a phone again. It is finally unlocked, I am not guaranteeing any thing, but there testimonials inside the video that it worked over here, So give it a try, u wont lose anything, u can go back to 3.1.3 ...