So I've heard you can open IPSWs with winRAR. I've also heard that making a NOR only firmware involves deleting a bunch of stuff inside the IPSW and modifying what's left. Can I download the Untethered patch, delete all the un-needed stuff in the IPSW, and then insert the patch and restore it in iTunes and not lose all my stuff? If yes, can someone tell me everything I need to delete and modify? Thanks! If this works I will make a very detailed easy tutorial.