iPadOS 13.4 (build 17E5223h) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, Cellular), released on 2020-02-05T18:17:10Z. The update package is 724.86 MB. This is a delta (partial) update that requires 13.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 99590a2e156340da4ec9840a8d1fb3562c752f95.zip.