iPadOS 9.2.1 (build 13D15) is an official Apple over-the-air update for the iPad 4 (Global), released on 2016-01-19T17:59:18Z. The update package is 965.15 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: 1eeca69a2dd4e8e57de1760e01fb2782ed06ea83.zip.