please help me!! just buy iphone 3gs.. 2nd hand.. at first i receive da iphone with ios 4.1 (something) dun remember... than, i try to jailbreak itself to ios 5.0.1.. da jb was succesful but da problem is my iphone can detect da "carrier" n ICCiD but , at network section.. it shown "Not available" n its keep searching~ y?? i/m using redsnow.. and just install ultrasnow to unlock my iphone via cydia... anyone.. please help me~