The Greenpoison RC5 iOS 4.2.1 jailbreak which was earlier available only for Mac users has now a Windows release as well. This update for Windows has been released by the Dev team and is available on the net for download. This new untethered jailbreak can be used for jailbreaking the Apple iPod touch, iPad and the iPhone. This windows release of the jailbreak was an eagerly awaited one by many users and also the steps for jailbreaking are similar to the one that we got to see on MAC. iPhone 3GS, iPad and all iPod touches can be jailbroken with this new untethered update for Windows.
According to the Dev team this new untethered jailbreak is completely safe to use and is also hassle free. The user would not find it complicated as all the steps involved with jailbreaking are inbuilt.