iPadOS 12.3 (build 16F5148a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2019-04-29T17:35:46Z. The update package is 89.27 MB. This is a delta (partial) update that requires 12.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bd128c7c90be076e9db33b16ca49306c5342639e.zip.