iPadOS 12.3 (build 16F5129d) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, WiFi), released on 2019-04-08T17:04:35Z. The update package is 321.5 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: 58a03232681a5524eb9c093dac44811811f53e7e.zip.