iPadOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2016-03-31T16:53:31Z. The update package is 1.16 GB. This is a delta (partial) update that requires 8.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fc15c2fd5bb311eea9905dc88c4bcb4bc2ab9d56.zip.