iPadOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2017-11-09T18:08:35Z. The update package is 163.2 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: 25ffc16e7c487d4572dfd7ce62932158a3d9e7a0.zip.