iPadOS 9.3 (build 13E5225a) is an official Apple over-the-air update for the iPad 4 (GSM), released on 2016-03-01T18:13:11Z. The update package is 1.23 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: fe2a9b773604373cfae84083c5346b3cae9caeac.zip.