iPadOS 12.3 (build 16F5148a) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, WiFi), released on 2019-04-29T17:35:54Z. The update package is 148.5 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: 493010a1fbdebd5df1d47bf81c0462e4bdd5ba87.zip.