iPadOS 13.1 (build 17A5837a) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2019-09-10T20:12:04Z. The update package is 339.55 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: ca19102ee40d8c29da07665187d483a9bb2a900e.zip.