iPadOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2017-10-23T17:04:38Z. The update package is 1.08 GB. This is a delta (partial) update that requires 10.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 354a6b824b7008f73823ae7dd0af3f9e9949c958.zip.