iPadOS 12.4 (build 16G5069a) is an official Apple over-the-air update for the iPad Air 3 (WiFi), released on 2019-07-09T17:15:38Z. The update package is 328.35 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: 13af2ebe1aede326cd25d7be3104c12b167ba057.zip.