iPadOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2016-03-31T16:52:44Z. The update package is 1.09 GB. This is a delta (partial) update that requires 8.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7a8b5a783a6a181369cfcacdf2ff6d2e53a22cdd.zip.