hello i just eestored to 5.1.1 and when i look in setting it says no acrier availlable... the iphone was working fine prior to restore and jailbreak.. tried my sim on another phone, it works, tried another sm inmine, works too.. any idea^

just to mention, when i instyalled 5.1.1 in in itunes, it nwever asked to install the carier files as it did in the pas, can i simply install them symply or should i do everuthing from scratch? what did i not docorrectly^!