iPadOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPad 2 (Mid 2012), released on 2016-03-31T16:51:15Z. The update package is 754.81 MB. This is a delta (partial) update that requires 8.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2a4fe7efb94fcb5e8a16079149b2163b3c5735c0.zip.