iPadOS 9.3.1 (build 13E238) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2016-03-31T16:53:56Z. The update package is 288.32 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: 471384ce9c9b0964d519c7ef34aed3248bc1fbb2.zip.