iPadOS 13.1 (build 17A5844a) is an official Apple over-the-air update for the iPad Air 2 (WiFi), released on 2019-09-18T17:06:27Z. The update package is 171.93 MB. This is a delta (partial) update that requires 13.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: dc01498194bd2bf4b661976e669e67b8a4b9effc.zip.