iPadOS 13.4 (build 17E5233g) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, WiFi), released on 2020-02-19T18:24:27Z. The update package is 813.61 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: 576449e3ae0d254395563614021aab78c746d538.zip.