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 950.69 MB. This is a delta (partial) update that requires 8.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4678f8e4f949b8574c01d26bd005d4b2d5ed4453.zip.