iPadOS 13.1 (build 17A5844a) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2019-09-18T17:06:28Z. The update package is 90.09 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: 311ec6768ba4c6d271c8158e0315491145f4a9f1.zip.