iPadOS 13.3.1 (build 17D5026c) is an official Apple over-the-air update for the iPad Pro (10.5-inch, WiFi), released on 2019-12-17T18:13:08Z. The update package is 190.3 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: 5f4e1810c72871560e495202eebb99f2991f3bb0.zip.