iPadOS 13.3.1 (build 17D5044a) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, Cellular, 1TB Model), released on 2020-01-14T18:20:53Z. The update package is 213.4 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: 2f4a5d785f1c0cce4b0053057c77ae4e13d12300.zip.