iPadOS 12.4 (build 16G5027g) is an official Apple over-the-air update for the iPad 6 (WiFi), released on 2019-05-15T17:05:25Z. The update package is 224.53 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: dc628d9329a43b6584d64ee432abcd0f1874026d.zip.