I've upgraded my iPhone 3GS to iOS 5 and hence changed my baseband to 5.16.05. Now it is not possible for me to unlock the phone. Is there any way I could get both GPS and phone working?. I've done jailbreak with redsnow. I don't need iOS 5 and is willing to downgrade without breaking anything. Is it possible to do it?
IOS – How to get the GPS working on iPhone 3GS after upgrading to iOS 5
iosiphonejailbreak
Best Answer
By now it is possible to down-grade your baseband - at least for the iPhone 3G and 3GS (unfortunately not 4/S) - from the iPad's 06.15 to 05.13.04 (un-lockable) thanks to the great work of the iPhone Dev Team:
See this post on their blog.