iPadOS 12.2 (build 16E5191d) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, Cellular, 1TB Model), released on 2019-02-04T18:06:06Z. The update package is 716.06 MB. This is a delta (partial) update that requires 12.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 743f431f7dbb54990413f3ab82899764d01e6571.zip.