iPadOS 13.1 (build 17A5831c) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2019-09-04T17:05:44Z. The update package is 295.73 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: dfacce2891694316c7f51e59bc4bbf644557085a.zip.