iPadOS 13.5 (build 17F5065a) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, WiFi), released on 2020-05-06T17:08:42Z. The update package is 149.94 MB. This is a delta (partial) update that requires 13.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e7c53278d17bda4ceff029f5c1636c455d680257.zip.