
Apple never allows you to downgrade iOS on iDevices, that's the major problem faced by many users as we know that latest version of iOS is not the greatest as it slows down old devices and also destroys jailbreak. iPhone 4 became almost unusable after iOS 7 update and iPhone 5 and 4S faced noticeable lags which are very annoying. We all know that iOS 6 and iOS 5 were lightning fast but apple don't want us to be happy.
But don't worry you can...