jailbreak for iOS 4.3.1 the latest version isnt out yet,update it to 4.2 jailbreak options are available.http://www.redmondpie.com/download-greenpois0n-rc5-for-windows-ios-4.2.1-untethered-jailbreak/.once yoou jailbreak How to Jailbreak and Unlock your iPhone 3G | iPhone-Hacks.com
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