iPadOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad Pro 9.7-inch (WiFi), released on 2017-11-09T18:07:59Z. The update package is 163.4 MB. This is a delta (partial) update that requires 11.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a78b38dce70529abe365aab671664b3dafbd6985.zip.