iPadOS 9.2.1 (build 13D15) is an official Apple over-the-air update for the iPad mini 2 (Cellular), released on 2016-01-19T17:59:29Z. The update package is 1.09 GB. This is a delta (partial) update that requires 8.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 23ae621e5228f75cc416307493b8eb88bf44b32a.zip.