iPadOS 13.1 (build 17A5821e) is an official Apple over-the-air update for the iPad Air 3 (WiFi), released on 2019-08-27T17:27:50Z. The update package is 412.25 MB. This is a delta (partial) update that requires 13.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5512b2ceaf79fbeb01687d6305a582f80728761d.zip.