iPadOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2017-10-23T17:01:30Z. The update package is 1016.21 MB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9d14dbd0b3d591279312fc8593838a721d32a8cf.zip.