iPadOS 9.9.11.3.1 (build 15E302) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2018-04-24T17:05:08Z. The update package is 1.49 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: b333fa7430f2f2ffde50ab76587cc97d396a51fe.zip.