Why is Redsnow Beta 3 stuck on reboot when I try to Jailbreak my iPhone 4?

I'm on iOS 6. O.1 with an AT&T iphone 4 and whenever I try to Jailbreak it Redsnow Beta 3 always gets stuck on " Waiting for Reboot ". Yes I maually selected the 6.0 ipsw and it is still not working. Can someone please help. 10 Points.

Its a teathered jailbreak. You need to reboot it everytime it restarts.

http://www.jailbreakmatrix.com/tools/how-to-jailbreak-ios-6-0-1

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