Previously we covered that PwnageTool 3.1 is available by Dev Team but it lacked jail breaking of iPhone 3GS and iPod touch, Well the wait is over and now you can jail break your iPhone 3GS or second genderation iPOD touch. In a posting on DEV Team blog, they announced the updated release of PwnageTool 3.1.3 for OSX which “pwns” or jail breaks iPhone 3GS and 2G iPod as long as the device was “pwned” prior to OS 3.1.
However, Third generation iPod touch is not supported at the moment and if you have already installed 3.1 upgrade on your device you still have to wait more.
See more details on DEV-Team Blog