iPadOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2017-11-09T18:08:26Z. The update package is 163.26 MB. This is a delta (partial) update that requires 11.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8615bf1dccb320d06ab79ce60a73b292b383aac0.zip.