iPadOS 11.1 (build 15B93) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, Cellular), released on 2017-10-23T17:05:48Z. The update package is 1.17 GB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 1b76c55d6a65d22f05b04dcbe3e835e8655c4c04.zip.