iPadOS 12.0 (build 16A5357b) is an official Apple over-the-air update for the iPad Air (China), released on 2018-08-15T17:06:16Z. The update package is 272.54 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 291f4f08601fe8df759ec70b11bfded64107ba12.zip.