iPadOS 12.2 (build 16E5227a) is an official Apple over-the-air update for the iPad Air (China), released on 2019-03-18T17:06:16Z. The update package is 623.22 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: cd473350be49a9e2e462be4de1959b4508cc8fab.zip.