iPadOS 12.3 (build 16F5129d) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2019-04-08T17:04:10Z. The update package is 356.25 MB. This is a delta (partial) update that requires 12.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d26480a11a08e4ef294e79f97abe19f8934955da.zip.