iPadOS 9.3 (build 13E233) is an official Apple over-the-air update for the iPad 4 (Global), released on 2016-03-21T18:55:48Z. The update package is 362.04 MB. This is a delta (partial) update that requires 9.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5428fd75b58f5806aa22ce4519c5bc35d6074d9e.zip.