iPadOS 9.3 (build 13E5237) is an official Apple over-the-air update for the iPad 4 (WiFi), released on 2016-03-28T16:53:03Z. The update package is 1.19 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a8d4902dd025b23449278f3c2a3349f214925978.zip.