iPadOS 13.3.1 (build 17D5050a) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2020-01-22T18:06:56Z. The update package is 74.48 MB. This is a delta (partial) update that requires 13.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: adb9c7ead6edb30877217f8700ec8569f3a69856.zip.