Please help me...I have an iPhone 3GS ios4.1 which I upgraded to 5.1.1 with itunes and jailbreak with redsn0w 0.9.12b1, stuck in 40% with so many lines of words. i switched off my phone then restart, go to recovery mode. after that i downgrade my phone to ios 4.1 with itunes and jailbreak with redwn0w 0.9.9b6 and install ultrasn0w from cydia (source http://repo666.ultrasn0w.com/) then it has been giving me the Searching... signal then No Service. I living in India. i have no offical simcard , my baseband to 6.15.00.