iPadOS 12.1.1 (build 16C5050a) is an official Apple over-the-air update for the iPad Pro 12.9-inch (Cellular), released on 2018-11-15T18:04:37Z. The update package is 64.28 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: 2eee022d9e10e83d35cd5d380cb14784e4fa48c0.zip.