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 333.71 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: 4c59df4c6933584ced53a949a56fc43f0e9c2e52.zip.