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.