iPadOS 12.3 (build 16F5139e) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, WiFi), released on 2019-04-22T17:08:26Z. The update package is 466.64 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: 9740909a09a6f3bbf52afd28ce323ba7ebf371be.zip.