Good day. I have been trying for over a week now to update my IPhone 5 to the latest iOS 6.1.2. I have a windows 8 operating system with Itunes that I am using to try and update the software. Everytime I plug the phone in and connect to itunes, I get a pop-up saying that I have an update for the phone iOS 6.1.2, but when I click download and install, It says that I do not have permission to access the requested resource. Please help!!! Thank you.
Have you ever used jailbreak software? - be honest
Do you have any security software installed - If so Disable it - Each and every part of it..
If your unsure how to disable security software follow
http://support.apple.com/kb/HT2292 - this will show you how to disable all 3rd party software -I usually keep my computer running like this since it runs much faster