Jailbreak iPhone Using Redsn0w
You can jailbreak iPhone, iPod using blackra1n, Redsn0w, Sn0wbreeze and Pwnage. Even iPhone, iPod with OS 3.1.3. The iPhone Dev team has updated the jailbreak / unlock tool to Redsn0w 0.9.2 which is a stable version and supports iPhone 2G, 3G, 3GS and iPod touch 1G, 2G and 3G. Redsn0w 0.9.2 works for Apple firmware 3.0 and 3.1.2 and available for download for Windows and Mac systems. The beta version of Redsn0w 0.9.3 is also available for download which supports IPCC tethering hack for iPhone 3G and 3GS.