iPadOS 13.4 (build 17E5241d) is an official Apple over-the-air update for the iPad Air 3 (Cellular), released on 2020-02-26T18:17:17Z. The update package is 818.6 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: c8ea9fe1efab1764b0b6fe9e6a1ed8de99397b04.zip.