iPadOS 12.3 (build 16F5156a) is an official Apple over-the-air update for the iPad Air (China), released on 2019-05-10T17:08:16Z. The update package is 44.94 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: 74d93601559d79b47dfbffc8ab26097bc9d9ed11.zip.