iPadOS 13.4 (build 17E5241d) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2020-02-26T18:17:22Z. The update package is 721.03 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: 3b2aa66ceba0f5c6ea40a7328ebfe553d6cffe01.zip.