iPadOS 9.3 (build 13E233) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2016-03-21T18:55:52Z. The update package is 284.47 MB. This is a delta (partial) update that requires 9.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ec49fd458a7be85f55e8a64510f141ead67d78d8.zip.