iPadOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPad 3 (GSM), released on 2016-03-31T16:52:13Z. The update package is 197.28 MB. This is a delta (partial) update that requires 9.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4e0896a95cf52f44ceb3bf819503d67d402e67ee.zip.