iPadOS 11.0 (build 15A372) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2017-09-12T19:06:32Z. The update package is 1000.5 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: 23a515721c75cd4246a7a02fa1b90a80ce798974.zip.