iPadOS 12.3 (build 16F5155a) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, WiFi), released on 2019-05-07T17:04:00Z. The update package is 469.41 MB. This is a delta (partial) update that requires 12.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8f9ef160bfe6988c9f2620aaeb3bcf85b923fe0a.zip.