Downgrading to pre-iOS 11 firmware is no longer possible October 5, 2017 by admin Tweet Apple has stopped signing iOS 10.3.3 and iOS 11, making downgrades to pre-iOS 11 firmware impossible. The latest iOS version currently available to the general public is iOS 11.0.2. Read more… Neowin Related Posts:Surface Pro 7 gets camera and Pen improvements in…Latest AirPods firmware update addresses important…Surface Go 3 latest firmware resolves display…Microsoft updates Surface Duo and Duo 2 with new…Surface Go 2 gets fixes and support for new…