iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad Pro (10.5-inch, WiFi), released on 2018-12-05T18:09:25Z. The update package is 1.8 GB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 548b65dba370472bb95c219d75dcc4441b949996.zip.