iPadOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPad mini 2 (WiFi), released on 2016-03-31T16:53:07Z. The update package is 267.47 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: 3a90e8172db242bdbf870326f07550506bfdb6fd.zip.