iPadOS 13.4 (build 17E5241d) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, Cellular, 1TB Model), released on 2020-02-26T18:17:44Z. The update package is 274.68 MB. This is a delta (partial) update that requires 13.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5b69c327648bfbf696459270e3a445aafd57135b.zip.