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http://blog.jordantbh.me/redsn0w-0-9-8b5-released-to-jailbreak-ios-5-beta-5-on-iphone-4-3gs-ipad-ipod-touch/
Redsn0w 0.9.8b5 Released To Jailbreak iOS 5 Beta 5 On iPhone 4, 3GS, iPad, iPod touch