iPadOS 13.4 (build 17E5249a) is an official Apple over-the-air update for the iPad Air 3 (WiFi), released on 2020-03-03T18:19:39Z. The update package is 814.24 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: bf03a634bc0496a6338e8b93091d2f05444f4318.zip.