iPadOS 12.3 (build 16F5129d) is an official Apple over-the-air update for the iPad Air (China), released on 2019-04-08T17:03:55Z. The update package is 269.32 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: 72ef59e8391e75f94fd61fc0dad02c388f05a041.zip.