iPadOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2017-11-09T18:08:33Z. The update package is 1.12 GB. This is a delta (partial) update that requires 10.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7bdfda84e19a1270b8aa6f60f9bddd2c67ddea45.zip.