iPadOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPad mini 2 (WiFi), released on 2016-03-31T16:53:05Z. The update package is 1.15 GB. This is a delta (partial) update that requires 8.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2ee3bf0555798362f89591324305dd211f766227.zip.