Can I still Downgrade my iPhone 4 down to IOS 6.1.3 from IOS 7? I just wanted to know if there is still a way to downgrade iOS 7, i don't have beta. (on an iPhone 4 which is listed as iPhone3,1 on http://iossupportmatrix.com).
No, there is no officially sanctioned way to downgrade. If you had been using the beta, it would have been possible; however, the official release is not reversible.