iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad Pro (10.5-inch, WiFi), released on 2018-12-05T18:09:28Z. The update package is 1.31 GB. This is a delta (partial) update that requires 11.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7e4417f23d41b5554dc71035e5e53143d2514e69.zip.