iPadOS 12.4 (build 16G5027g) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, WiFi, 1TB Model), released on 2019-05-15T17:05:33Z. The update package is 267.19 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: 67f45d44f39c9ed8cc64dbd5cbc75481966b511c.zip.