iPadOS 12.4 (build 16G5027i) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, Cellular), released on 2019-05-20T17:07:04Z. The update package is 76.26 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: 6501fc15d00202e983a93f6125b883919f1cc6a5.zip.