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 153.03 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: a1152cdc7bc15843c053ba03ef43e75d21d0f0d1.zip.