iPadOS 12.3 (build 16F5148a) is an official Apple over-the-air update for the iPad Pro 9.7-inch (Cellular), released on 2019-04-29T17:35:43Z. The update package is 356.04 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: 397934cc5e4d8d98d00bdf69fae6d956e71d8ee2.zip.