iPadOS 13.3.1 (build 17D5050a) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, Cellular, 1TB Model), released on 2020-01-22T18:07:17Z. The update package is 214.23 MB. This is a delta (partial) update that requires 13.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7766a4b20d16d18ed77d598cccba1014c05fcaf8.zip.