iPadOS 13.1 (build 17A5837a) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, Cellular, 1TB Model), released on 2019-09-10T20:17:50Z. The update package is 218.12 MB. This is a delta (partial) update that requires 13.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 74e226697d550c46b9bcc0b3d09b08861e5dacb4.zip.