iPadOS 12.1.1 (build 16C5043b) is an official Apple over-the-air update for the iPad Pro 3 (11-inch, Cellular, 1TB Model), released on 2018-11-07T21:08:48Z. The update package is 302.2 MB. This is a delta (partial) update that requires 12.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fb81a824db7589c7b67e0aec8d4b4aa9fb93b963.zip.