iPadOS 13.3.1 (build 17D5026c) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, WiFi), released on 2019-12-17T18:13:13Z. The update package is 208.9 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: 3244ef559e96c5ec975b4f09bff7dc7c3c2a99c2.zip.