iPadOS 9.2.1 (build 13D15) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2016-01-19T17:59:32Z. The update package is 290.65 MB. This is a delta (partial) update that requires 9.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 30ecd532ab30a8b1a9d8f1f11947ef034037ddde.zip.