iPadOS 11.2.2 (build 15C202) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2018-01-08T18:14:01Z. The update package is 359.2 MB. This is a delta (partial) update that requires 11.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9cf966e444080d5434156c9c713637553b66fd67.zip.