Hello guys, i have an ooold Iphone 3G software is 3.0.1, it is jailbreaked. Now i want to update the iphone to 3.1.3 because some apss arent working anymore. How can i do this? I think 3.1.3 is the better choice, because friends told me, that 3G doesnt work very well with 4.0. What do i have to do? Thanks a lot!