Unlocking iPhone 4S baseband 1.0.11 on iOS 5.0 and 1.0.13 on iOS 5.0.1 will soon be a reality and the hard work by iPhone Dev Team will finally pay-off. Lead hacker Musclenerd has sparked our hopes further with an exciting post on Twitter confirming to have dumped the bootrom of iPhone 4S Qualcomm’s baseband successfully.
This is the first code that runs on the baseband and controls how your iPhone connects to a cellular network. It resides in internal ROM. It will help the iPhone Dev Team to diagnose the failure of baseband crash which can then be used as an exploit to inject for successful unlock. In simple terms - It allows unsigned code (exploit) to be uploaded using Baseband Bootrom Protocol.
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.
Last week, Musclenerd confirmed “very promising” iPhone 4S Unlock in works, re-igniting hopes of iPhone users who are waiting since long. Once the exploit is fully blown and packaged, you will be able to carrier unlock iPhone 4S and then be free to hop off of AT&T and onto another carrier worldwide (T-Mobile USA, for example, in theUS).
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).