Has been tested this week, works and looks good. NO UDID OR PAYING NEEDED! No lag, bugs experienced.

                           Explanation:

You can skip the [''] parts if you already are on iOS 6.1.3. [The way to install this is open itunes and update to iOS 6.1.3 (Included in torrent) You can do this by holding down Shift/Option and pressing restore iphone in Itunes Select the IPSW file from iOS 6.1.3] When you are on iOS 6.1.3, go to Itunes hold down Shift/Option and press Check For Updates select the IPSW file from iOS 7.