iPadOS 12.4 (build 16G5038d) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, WiFi, 1TB Model), released on 2019-05-28T17:07:32Z. The update package is 286.89 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: 8a3b34936ca532c2df8f3beeea4f59d5faaf03fc.zip.