iPadOS 9.2.1 (build 13D15) is an official Apple over-the-air update for the iPad 2 (Mid 2012), released on 2016-01-19T17:59:01Z. The update package is 767.25 MB. 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: fe135c56f381cdad0ab66d63ec1a544e6baaa251.zip.