iPadOS 9.9.10.2.1 (build 14D15) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2016-12-20T18:02:29Z. The update package is 1.68 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 926d3bbfbccff1e173600aab3ca4b3ea0c2f9dd3.zip.