Update (November 29, 2010): How to Jailbreak and Unlock iOS 4.2.1 for iPhone 3GS and iPhone 3G with Ultrasn0w 1.2, PwnageTool 4.1.3 and Redsn0w 0.9.6b5
iPhone 3GS owners who have jailbroken their iPhone and are interested in upgrading to the newest iPhone 3.1 OS can now be happy to know that the famous Dev Team has released the iPhone 3.1 Pwnage tool for 3GS.
Unlike the previous iPhone 3.1 Pwnage, this updated tool includes the iPhone 3GS and the 2nd Generation iPod Touch (NOT the 3rd Generation iPod Touch).
You would have to follow the iPhone Dev Team complete instructions (link below) thoroughly to make sure things are done properly, that your iPhone (or iPod Touch) fit the specs, and simply to make sure you are doing everything properly.
For another new addition to the iPhone, Push Gmail is now available.
Torrent File Via: iPhone Dev Team