iPadOS 9.9.11.2.6 (build 15D100) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2018-02-19T21:12:01Z. The update package is 1.53 GB. This is a delta (partial) update that requires 8.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9d4d3ffb84b157af41a023dc37911b5aa7c75a29.zip.