iPadOS 13.1 (build 17A5837a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2019-09-10T20:13:43Z. The update package is 171.45 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: 98d31729a51bcdb69717b20891204952b20f874d.zip.