iPadOS 13.3.1 (build 17D5044a) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2020-01-14T18:20:34Z. The update package is 178.79 MB. This is a delta (partial) update that requires 13.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 9ab3d2d2765aad5c5b7efcafbac612c0e4b45ead.zip.