iPadOS 12.2 (build 16E5223a) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2019-03-11T17:08:33Z. The update package is 649.68 MB. This is a delta (partial) update that requires 12.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 48b2763d6914c8dfb952c2f176425974a74f4165.zip.