iPadOS 9.2.1 (build 13D15) is an official Apple over-the-air update for the iPad 2 (Mid 2012), released on 2016-01-19T17:59:02Z. The update package is 968.28 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: 505db45e57d1d2dccd9b3c42506aa91fde5190fd.zip.