iPadOS 12.3 (build 16F5139e) is an official Apple over-the-air update for the iPad Air (China), released on 2019-04-22T17:07:45Z. The update package is 248.17 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: 4237e07d5a0f223197a89fe6867b839efc461e19.zip.