Hackers have followed up the recent release of an iPhone 3G unlocking tool for the Mac with the release of the equivalent software for Windows users.

The software - WinPwn - jailbreaks and unlocks older iPhones, and jailbreaks iPhone 3Gs and the iPod touch.

This process which enables installation of non-Apple-approved third party applications and lets users employ the device on non-Apple-approved carrier networks.