iPadOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2017-11-09T18:07:19Z. The update package is 163.64 MB. This is a delta (partial) update that requires 11.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2f8a4fb4e5c3d8a9a4f2c37a68ff2691144da5b9.zip.