iPadOS 12.3 (build 16F5117h) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2019-03-27T17:05:48Z. The update package is 310.37 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: 780258544c5eca7547d8c18d7f636c5e169ec19c.zip.