iPadOS 9.3 (build 13E233) is an official Apple over-the-air update for the iPad Air (WiFi), released on 2016-03-21T18:55:50Z. The update package is 419 MB. This is a delta (partial) update that requires 9.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4d66e27696d1ee5907bb3b675cd861d2ef8988c2.zip.