iPadOS 12.1.1 (build 16C5050a) is an official Apple over-the-air update for the iPad Pro 3 (12.9-inch, Cellular, 1TB Model), released on 2018-11-15T18:04:47Z. The update package is 133.34 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: eaf0bf30680a85ff8155a14167b1d3a8face6835.zip.