Ok I have a mc bootrom 3gs I had battery problems w my old 3gs, I'm still digruntle about that so to make a long story short 4.0 is out I'm on 3.1.3 I can't jb and 4.0 has some features I would like to have. So does anyone know of any links I can get the firmware from w/o using apples update or should I just use theirs until the jb for it comes out because it's gonna happen I just dont wanna use theirs and then run into problems when it comes time to jb it