iPadOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2017-11-09T18:08:34Z. The update package is 1.11 GB. This is a delta (partial) update that requires 10.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d7228681eab249fecfa4047eabb3ac0443d83335.zip.