iPadOS 10.3 (build 14E5273a) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2017-03-13T17:01:12Z. The update package is 383.47 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: fc23983482b07830651c09b0ded8a36cca8d9e5c.zip.