Apple today has stopped signing iOS 13.6, which means that users cannot downgrade or install this update and must install the latest iOS version which is iOS 13.6.1.
iOS 13.6.1 includes bug fixes and performance improvements even including a patch for a thermal management issue that would in some cases cause an iPhone’s screen to display a green tint.
Apple regularly stops signing older updates so users can’t downgrade back to an earlier iOS update and so users can keep their iPhone secure with the latest iOS update available.
