iPadOS 13.4 (build 17E5255a) is an official Apple over-the-air update for the iPad Pro 9.7-inch (Cellular), released on 2020-03-10T17:21:00Z. The update package is 733.49 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: 25fa0f8f0660a32cba0ae633ae79eb4f6913b35e.zip.