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Good news for iPhone 4, iPhone 3GS, iPad, iPod Touch 3G/4G, Apple TV users that now they can jailbreak iOS 4.3.1 untethered using Pwnage Tool 4.3. For your information iOS 4.3.1 was jailbroken last week using Sn0wbreeze (for Windows) and PwnageTool bundles (for Mac) but it was limited to tethered boot.