iPadOS 9.2.1 (build 13D15) is an official Apple over-the-air update for the iPad 4 (Global), released on 2016-01-19T17:59:17Z. The update package is 1012.02 MB. This is a delta (partial) update that requires 8.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fbb80b89cc1bfc5739b09bb594c7b00a456b6a8c.zip.