iPadOS 10.3.1 (build 14E304) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2017-04-03T17:00:13Z. The update package is 564.78 MB. This is a delta (partial) update that requires 10.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4ce57b24e096e216c0f19ded1f852c38c1bc7dd3.zip.