iPadOS 9.9.11.1 (build 15B92) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2017-10-20T17:05:22Z. The update package is 1.73 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: 55d383902c0380c690861c4c42faea6babaae167.zip.