Can I downgrade from iOS 8.1.2 to iOS 7.1.2
Are there any instructions on how to downgrade my iPhone 4S from iOS 8.1.2 to iOS 7.1.2. My iPhone feels a lot slower ever since I have upgraded to iOS 8. Upgrading it each time has improved a tiny bit but I would much prefer iOS 7.1.2. I have tried to search YouTube videos on how to do it but everytime I try, it comes up with, "This device isn't eligible for the requested build." Can somebody please help me?
iPhone 4S, iOS 8.1.2