iPadOS 9.3 (build 13E5191d) is an official Apple over-the-air update for the iPad 4 (WiFi), released on 2016-01-25T20:52:21Z. The update package is 69.13 MB. This is a delta (partial) update that requires 9.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8e4a3f3c3e0b279773883ac017b7940fc2985747.zip.