iPadOS 9.9.11.3.1 (build 15E302) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2018-04-24T17:07:28Z. The update package is 1.52 GB. This is a delta (partial) update that requires 8.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9b05b61e355f59ea4979ce25d8e7de82d39b38aa.zip.