iPadOS 9.9.12.1 (build 16B5089b) is an official Apple over-the-air update for the iPad Pro (10.5-inch, Cellular), released on 2018-10-22T17:01:47Z. The update package is 2.22 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: 23b324a1dffeeae6f885f157fdeadf6c3615447a.zip.