iPadOS 13.6 (build 17G5045c) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, WiFi, 1TB Model), released on 2020-06-09T17:28:10Z. The update package is 288.09 MB. This is a delta (partial) update that requires 13.5.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 247c31e29e6a392468594362e0ea18b1304d7dd1.zip.