iPadOS 13.1 (build 17A5844a) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2019-09-18T17:06:25Z. The update package is 171.92 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: f6aa7e00445ec45649e86c205345b13933bac2cb.zip.