iPadOS 10.2.1 (build 14D15) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2016-12-20T18:02:26Z. The update package is 58.54 MB. This is a delta (partial) update that requires 10.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 94602df356227d2f1be469427fd7e9c05b005d4a.zip.