The unofficial iPhone Dev Team has released PwnageTool 3.1.5, an updated version of its jailbreaking tool for iPhones and iPod touches. As is normal with Apple firmware, the official iPhone 3.1.3 distribution undoes any jailbreaking or unlocking if installed on top of hacked v3.1.2 code. The PwnageTool update allows some devices to retain their hacks while gaining the advantages of the new firmware.

Devices compatible without much trouble include the first-generation iPhone, the iPhone 3G, and the first-generation iPod touch. The iPhone 3GS and second-generation Touch are also compatible, but only if they are still using early bootroms. The Dev Team further warns that 3GS owners should avoid PwnageTool entirely unless they have SHSH hashes backed up using Cydia. If a mistake is made, there is otherwise be no way of reverting from the Apple v3.1.3 firmware.