iPadOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2016-03-31T16:54:21Z. The update package is 26.99 MB. This is a delta (partial) update that requires 9.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ebd62b9d702179a26ad0c2e59a70724eb79b49b0.zip.