iPadOS 12.4 (build 16G5056d) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2019-06-24T17:16:56Z. The update package is 283.99 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: 0407067ed077e4e2430a1f93503de07cfcb39984.zip.