iPadOS 10.3.1 (build 14E304) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2017-04-03T16:59:58Z. The update package is 534.68 MB. This is a delta (partial) update that requires 10.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d7b03518ad8ac9a88bd7d462fee5a9b9a7798a6a.zip.