iPadOS 13.5 (build 17F5054h) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2020-04-29T17:06:47Z. The update package is 166.97 MB. This is a delta (partial) update that requires 13.4.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 667cd3a5878edb2139af4dd57e93225dd6c1461d.zip.