iPadOS 9.9.14.3 (build 18C66) is an official Apple over-the-air update for the iPad Pro 4 (12.9-inch, Cellular), released on 2020-12-14T18:13:18Z. The update package is 4.2 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: 099801d1b261790560922867ca5295a3091207a6.zip.