iPadOS 10.3 (build 14E5273a) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2017-03-13T17:00:17Z. The update package is 356.5 MB. This is a delta (partial) update that requires 10.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 511fab2cabb7496ddaa3f110f04ccbdffab18f32.zip.