iPadOS 12.3 (build 16F5156a) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, WiFi, 1TB Model), released on 2019-05-10T17:09:16Z. The update package is 72.85 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: 0286c25a621951d03b63cebf6696ebb7ce300910.zip.