iPadOS 10.3.1 (build 14E304) is an official Apple over-the-air update for the iPad Air (WiFi), released on 2017-04-03T16:59:45Z. The update package is 534.69 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: 908a4bae554f63e18a01353ea4e5e6147b539fc1.zip.