iPadOS 12.4 (build 16G5056d) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2019-06-24T17:16:56Z. The update package is 191.43 MB. This is a delta (partial) update that requires 12.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c38a963c37412c444b8d7f7697251d183201fab2.zip.