iPadOS 11.1 (build 15B5086a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (WiFi), released on 2017-10-16T17:04:07Z. The update package is 100.98 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 25c26c5c5e2fc85cf73c575a85514459dfccf880.zip.