iPadOS 12.4 (build 16G5027i) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2019-05-20T17:06:48Z. The update package is 206.58 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: 66d11cabfd471e3fb3d634c9f4a7966410c749b7.zip.