iPadOS 12.4 (build 16G5069a) is an official Apple over-the-air update for the iPad Air (China), released on 2019-07-09T17:15:41Z. The update package is 95.86 MB. This is a delta (partial) update that requires 12.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 72b40f75c2acf9be40cac0891e28d96bc3718c73.zip.