iPadOS 12.3 (build 16F5139e) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2019-04-22T17:07:59Z. The update package is 248.17 MB. This is a delta (partial) update that requires 12.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 180c2231bdb2e5d29c4bc61012ec73f4fa316c3a.zip.