iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad Pro (10.5-inch, WiFi), released on 2018-12-05T18:09:29Z. The update package is 446.64 MB. This is a delta (partial) update that requires 12.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fb44fc36884673bf0079899282d4a1714564a9dd.zip.