iPadOS 12.2 (build 16E5181f) is an official Apple over-the-air update for the iPad Air (China), released on 2019-01-24T18:05:28Z. The update package is 585.99 MB. This is a delta (partial) update that requires 12.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b3d545b1e48c95fd0ca75219f2d3e83b58775703.zip.