iPadOS 9.3 (build 13E237) is an official Apple over-the-air update for the iPad 4 (Global), released on 2016-03-28T16:51:24Z. The update package is 245.94 MB. This is a delta (partial) update that requires 9.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9d4ad935cd533157eb60ec0d0c4af3c0dd6a05c2.zip.