iPadOS 12.4 (build 16G5056d) is an official Apple over-the-air update for the iPad Air 3 (WiFi), released on 2019-06-24T17:16:45Z. The update package is 333.02 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: efbb3ccdc9d027dc3cd99d58a33a48c254af1128.zip.