iPadOS 13.3.1 (build 17D5044a) is an official Apple over-the-air update for the iPad Pro (10.5-inch, WiFi), released on 2020-01-14T18:20:46Z. The update package is 186.8 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: 4868e7018a82c6ea96fecd3d6f4281479f376551.zip.