iPadOS 12.0 (build 16A5318d) is an official Apple over-the-air update for the iPad Air (China), released on 2018-07-03T17:05:04Z. The update package is 1.06 GB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e2e5616ba44ccab5acf8c3bd83bc9b8cb6896b2b.zip.