iPadOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2016-03-31T16:54:00Z. The update package is 424.82 MB. This is a delta (partial) update that requires 9.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 96e658f6bf9674e765a2fb86c0bd0cd49014e694.zip.