iPadOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad Pro (10.5-inch, WiFi), released on 2017-11-09T18:08:51Z. The update package is 198.19 MB. This is a delta (partial) update that requires 11.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: d6f160b4e65f766713699289f970f3822bb5b66d.zip.