iPadOS 12.3 (build 16F5139e) is an official Apple over-the-air update for the iPad Pro (10.5-inch, Cellular), released on 2019-04-22T17:08:21Z. The update package is 381.62 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: 5d2786f658c88cd44c6f8daa1c2ccc51c801d366.zip.