iPhone OS 3.1 Jailbroken for iPhone 3GS Now

[wraggster]

It's done. iPhone OS 3.1 has been jailbroken for the iPhone 3GS now by the Dev Team. The catch: You need to have already Pwnd it at 3.0 or 3.0.1—you can't jailbreak 3.1 directly, for now.

http://gizmodo.com/5373243/iphone-os-31-jailbroken-for-iphone-3gs-now