iPadOS 13.3.1 (build 17D5044a) is an official Apple over-the-air update for the iPad Air 3 (Cellular), released on 2020-01-14T18:20:31Z. The update package is 200.4 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: 2630b7113e7ac9e6e8217fa312de8c14eeacbaee.zip.