iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad Pro (10.5-inch, Cellular), released on 2018-12-05T18:09:33Z. The update package is 1.34 GB. This is a delta (partial) update that requires 11.2.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 8d8c3f8a9e62b18a1d09bbf7a20fdf342c6fdea4.zip.