iPadOS 9.9.10.2.1 (build 14D27) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2017-01-23T18:07:53Z. The update package is 1.11 GB. 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: c3afc055ff4d61bc5b5bd7b6c58728778539f327.zip.