iPadOS 12.3 (build 16F5117h) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, WiFi, 1TB Model), released on 2019-03-27T17:06:16Z. The update package is 329.88 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: dc6adcf1c4cb29a128be7216a8df927baea35fae.zip.