iPadOS 9.2.1 (build 13D15) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2016-01-19T17:59:39Z. The update package is 239.06 MB. This is a delta (partial) update that requires 9.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1e38628b9da91ef2048f57dec36cea269c0dca7c.zip.