iPadOS 13.4 (build 17E5233g) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2020-02-19T18:24:19Z. The update package is 793.1 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: b5ef3f8abb93ad1a14f6a80c601118d60a14751a.zip.