iPadOS 9.9.16.4 (build 20E6246) is an official Apple over-the-air update for the iPad Pro (12.9-inch, Cellular) (6th generation), released on 2023-03-27T17:11:05Z. The update package is 4.68 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: 5206334755f62cbdfa2eeeb81fc89ac50013d652.zip.