Apple stopped signing iOS 13.1.1, iOS 13 and iOS 12.1.4
Apple stopped signing in older versions of iOS 13.1.1, iOS 13, and iOS 12.1.4 after few days of iOS 13.1.2 public release and iOS 13.2 beta release. So, now you can’t downgrade your iOS versions to the versions mentioned above. However, iOS 13.1 still signing, and you can downgrade your iOS version to iOS 13.1. […]