iPadOS 13.1 (build 17A5821e) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, Cellular, 1TB Model), released on 2019-08-27T17:28:46Z. The update package is 422.21 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: 27ea1116e14d922ad4e2b57d26476bf5c244c079.zip.