iPadOS 9.9.11.1 (build 15B93) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2017-10-23T17:05:24Z. The update package is 1.26 GB. This is a delta (partial) update that requires 9.3.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4b085c9c00932349c52ef0e1090430637e03a975.zip.