iPadOS 13.1 (build 17A5837a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2019-09-10T20:13:58Z. The update package is 171.39 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: 7521dfa272837b773aa62824f4f25c35e6c2761b.zip.