iPadOS 13.1 (build 17A5837a) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2019-09-10T20:12:35Z. The update package is 170.5 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: 2bd96f5ba20fa73bf3e079043c1c78a4ab26c896.zip.