Now Greenpoison is also available to download for Mac users to jailbreak iOS 4.1 on iPhone 4, iPhone 3GS, iPad and iPod Touch 3G/4G. The Windows and Linux versions of Greenpoison have already been released.
The steps (guide) to jailbreak iPhone with Greenpoison are same as mentioned in this post. If you rely on unlock, don’t use this tool but wait for PwnageTool because your iDevice will be no more unlocked after Greenpoison Jailbreak.
It is to remind you that Greenpoison is based on Geohot’s Limera1n exploit which can jailbreak the idevices for life on any firmware.
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