iPadOS 13.3.1 (build 17D5044a) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, Cellular), released on 2020-01-14T18:20:57Z. The update package is 213.42 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: 40db44169d269edd2e87ff39e0af6805de01abc2.zip.