iPod Touch 2G , 3G and iPod Touch 4G using Greenpois0n for Windows

The Chronic Dev-Team has released RC4 of their Greenpois0n jailbreak utility which brings support for the iPod touch 2G. Untethered Jailbreak!
These are instructions on how to jailbreak your iPod Touch 2G , 3G and iPod Touch 4G using Greenpois0n for Windows. Greenpois0n only supports iOS 4.1 firmware.
Step one
Download Greenpois0n RC4 here – > gp_win32_rc4.zip

Step Two
When prompted save the download to your desktop

Step Three
Double click the downloaded gp_win_rc4.zip file then drag the greenpois0n.exe file to the desktop. Double greenpois0n.exe from the desktop to launch the application

Step Four
Power off your iPod then click the large Prepare to Jailbreak (DFU) button

Step Five
You will now be instructed on how to place your iPod into DFU mode. You can get help with this here.
You will be asked to press and hold the sleep button for 2 seconds.

Continue holding sleep; press and hold home for 10 seconds.

Release sleep button; continue holding home for 15 seconds.

Step Six
Once your iPod is successfully in DFU mode you may click the Jailbreak button.

Step Seven
Greenpois0n will now jailbreak your device

Step Eight
Click the Quit button once the software application has completed.

Step Nine
After the iPhone restarts you’ll notice a new Loader application on your Springboard. Press to launch it.

Step Ten
Press to select Cydia then press the large Install Cydia button that appears.

Step Eleven
Once Cydia has installed successfully you will be asked if you want to remove Loader from your device. Press the Remove button then press the Home button. Your device will now automatically reboot.