iPadOS 13.4 (build 17E5255a) is an official Apple over-the-air update for the iPad 6 (Cellular), released on 2020-03-10T17:21:11Z. The update package is 779.41 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: 68c20df73c21d8b6e3128985932cc27d95657b6d.zip.