iPadOS 12.3 (build 16F5148a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2019-04-29T17:35:45Z. The update package is 365.85 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: 33d9a540b386fd77e649def6e6f4f646fc041240.zip.