iPadOS 12.4 (build 16G5056d) is an official Apple over-the-air update for the iPad Air 3 (Cellular), released on 2019-06-24T17:16:46Z. The update package is 337.28 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: e2cd0ed90430cd48121bf6fe1661dd0b1452339c.zip.