iPadOS 12.1.3 (build 16D40) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, Cellular, 1TB Model), released on 2019-01-22T18:14:54Z. The update package is 381.15 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2dd7e7d4788d14fb706547495c762bc3a3aae7dd.zip.