iPadOS 13.1 (build 17A5844a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2019-09-18T17:06:33Z. The update package is 88.2 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: 884b05070c7c9f2a8b027eb970bbc67e1cb8992d.zip.