The new tool developed by the Chronic Dev Team, with the release of Limera1, does not implement the exploits of Shatter Pod2g USB but the same exploit used by Geohot.With it you will be able to successfully run the jailbreak your iPhone.

Greenpois0n is only compatible with:
 iPhone 3GS
 iPhone 4
 iPod Touch 3G
 iPod Touch 4G
 iPad(both models)

In the future the program will be updated to include support for the iPod Touch 2G and the second-generation Apple TV.

How To Jailbreak

1.First download Greenpois0n for Windows from this link. Greenpois0n
2.Once the download is complete, move the archive. Zip and unzip it on your desk.

3.Inside the folder find the file. Greenpois0n exe, open it.

4.Open the program, click on the 'Prepare to Jailbreak (DFU)'.