iPadOS 13.4 (build 17E5223h) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2020-02-05T18:17:03Z. The update package is 711.52 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: a5ca9d27df2922b9c4e5d338441a40656b3f371d.zip.