iPadOS 12.3 (build 16F5129d) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, WiFi), released on 2019-04-08T17:04:26Z. The update package is 353.65 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: e4977369c7f7d9461ec3e6d7280cc6460ff06014.zip.