On the side note, when dealing with any iOS 6, always use the 6.0 IPSW until the utilities are updated to support the actual iOS. All iOS 6's so far are hot fixes for the original 6.0. Using 6.0.1-6.1.3 when using iOS IPSW based functions like jailbreaking will give you a missing key.plist since the utilities only recognize iOS 6.0, more specifically RedSn0w