iPadOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPad mini (WiFi), released on 2016-03-31T16:51:21Z. The update package is 225.88 MB. This is a delta (partial) update that requires 9.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 18906f9a9e2ef58820df5e7f8b021ae02388cb52.zip.