iPadOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2017-10-23T17:01:32Z. The update package is 26.39 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9c35507eff77d36af0c1965e66f9f6ce828b8a75.zip.