iPadOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad Pro 9.7-inch (Cellular), released on 2017-11-09T18:08:10Z. The update package is 163.45 MB. This is a delta (partial) update that requires 11.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: cace54495ed2399e318f5b5729f0a36efbf13d91.zip.