iPadOS 13.3.1 (build 17D5044a) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, WiFi, 1TB Model), released on 2020-01-14T18:20:52Z. The update package is 197.01 MB. This is a delta (partial) update that requires 13.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3a748c8625365ab6edff76be4efa41ee8fed3d87.zip.