iPadOS 12.4 (build 16G5027g) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2019-05-15T17:05:13Z. The update package is 206.51 MB. This is a delta (partial) update that requires 12.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 784ed0c300ff217c24f03065151c859efc42ea30.zip.