The GreenPois0n jailbreak for iOS devices is now available to download for Mac. This will allow you to jailbreak your iPhone 3GS, iPhone 4, iPod Touch 3G/4G, and iPad running iOS 4.1 and iOS 3.2.2.
Taimur Asad of Redmond Pie is reporting that the Mac download is now live and they have step by step instructions to help you install it on your device. This will make the process of downloading and installing the software straight forward.
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The windows version of the jailbreak for iOS 4.1has been available for a few days now, and users are reporting mixed success after installing the software. Click the link to use the instructions on installing the software, which you can get from here, and let us know how you get on.