iPadOS 13.3.1 (build 17D5026c) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, WiFi, 1TB Model), released on 2019-12-17T18:13:17Z. The update package is 211.25 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: d815c75d288f8650cb919d6f2d7fa9ff765c3077.zip.