iPadOS 13.3.1 (build 17D5044a) is an official Apple over-the-air update for the iPad Pro 9.7-inch (Cellular), released on 2020-01-14T18:20:40Z. The update package is 152.01 MB. This is a delta (partial) update that requires 13.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ad3f0c5792afbd1805a5c6fc03b45d7f21b641d5.zip.