iPadOS 13.4 (build 17E5255a) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, WiFi), released on 2020-03-10T17:21:16Z. The update package is 818.75 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: f8e44049932f67f8e82c10b9bc9c3476249ce580.zip.