iPadOS 12.1.1 (build 16C5043b) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2018-11-07T21:08:39Z. The update package is 232.15 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: 9fe341997ea68cb787e033d50b34d43ccb16b6ea.zip.