iPadOS 12.3 (build 16F5148a) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, Cellular), released on 2019-04-29T17:35:49Z. The update package is 382.66 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: e2fc2aeb158304e49748077a16be22269be78a82.zip.