iPadOS 9.3 (build 13E233) is an official Apple over-the-air update for the iPad 4 (WiFi), released on 2016-03-21T18:55:45Z. The update package is 949.26 MB. This is a delta (partial) update that requires 8.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 64cfecd021f3697f411dc0c9f501b7a38e68205e.zip.