iPadOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2017-10-23T17:01:31Z. The update package is 159.52 MB. This is a delta (partial) update that requires 11.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 07834859ed53f148a527149e08779c379333367f.zip.