iPadOS 13.1 (build 17A5831c) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, Cellular, 1TB Model), released on 2019-09-04T17:05:59Z. The update package is 537.45 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: 8068dbb6027b0d20c5868e89aa67e2137dab188d.zip.