iPadOS 9.2.1 (build 13D15) is an official Apple over-the-air update for the iPad mini (WiFi), released on 2016-01-19T17:59:02Z. The update package is 866.94 MB. This is a delta (partial) update that requires 8.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: adb165578df7cb8495414e8955e0c0f60f9adad3.zip.