iPadOS 13.4 (build 17E5249a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2020-03-03T18:19:50Z. The update package is 728.31 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: 7adc1c1cff5d09bc00ab32dcd14a42e1ca23acfc.zip.