iPadOS 13.3.1 (build 17D5050a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2020-01-22T18:07:02Z. The update package is 182.66 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: dce83bc019cf482f46dbbc8fca37c25c3595e638.zip.