iPhone Dev Team inches closer to carrier unlock iPhone 4S Baseband

You will soon be able to unlock your iPhone 4S modem firmware  baseband 1.0.11 on iOS 5.0 and 1.0.13 on iOS 5.0.1, thanks to the hard working folks at Dev-Team. In a short tweet-announcement, MuscleNerd confirmed that the carrier unlock solution is a step closer to completion for iPhone 4S.

The hackers were able to unlock iPhone 4S’ baseband in modem’s firmware (the code that controls how your handset connects to a cellular network) for use with any GSM carrier. The latest baseband hack will allow a jailbroken iPhone 4S to be unlocked and used on any wireless carrier. iPhone 4S users everywhere will then be free to hop off of AT&T and onto another carrier worldwide (T-Mobile USA, for example, in the US).

Details are scant right now but it seems that intrepid iPhone hackers at dev camp have rewritten the entire baseband-unlocking code from scratch that will support only A5 powered iPhone 4S.  Just to add, the iPhone 4 (GSM) use the XMM 6180, while the iPhone 4 (CDMA) uses the MDM6600 and the iPhone 4S uses the MDM6610 baseband processor.

The unlock utility will likely be “ultrasn0w” and will only work with the latest version of Apple’s smartphone iPhone 4S (not iPhone 4 or iPhone 3GS). Once you’re jailbroken, you’d need to simply download ultrasn0w from Cydia and install it. Voila! Super easy.

Since it is just half-cooked vulnerability and not a full blown exploit, the iPhone Dev Team will take some time before it is ready for jailbreaking community. No ETA has been shared so far but to be the first to know about iPhone 4S free unlock, just follow us on twitter, Google+ or Facebook.