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 284.45 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: 29a80010da4da9d0d68f7030ea3c89d4e56952cc.zip.