iPadOS 13.1 (build 17A5821e) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, Cellular, 1TB Model), released on 2019-08-27T17:29:00Z. The update package is 422.59 MB. This is a delta (partial) update that requires 13.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1e1bdc53e97cb3e93535a1119daec6163db38491.zip.