I am following your guide to restore my iPhone 4 from the IOS 7 beta to the IOS 6.1.3 again. The only problem is I am stuck on the part of the firmware. The firmware, when I download it from your site, it becomes a zipped file. I extracted the files, but I don't know what I am supposed to do, since when I try to restore the phone, it is opening up a lot of folders inside the folder. PLEASE HELP ME!!!