App;e has Recently updated its baseband in order to secure unlocking iPhone 3GS . The new Iphone 3GS code is is responsible for all communications with the mobile network and Apple’s move was probably an attempt to make it impossible of how to unlock the new iPhone 3GS up. It worked as well. At least in some time.
Blacksn0w iphone unlock software has reselased a new version for hacking iphone 3gs software . I think this new version makes it quite possible to unlock the iPhone 3GS up, even if it makes use of the new baseband.
You can download Blacksn0w for both Windows and Mac via link here. And remember to enjoy it as long as it lasts. Apple will probably update the software in the iPhone again soon, so the ring can be connected.