iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad Pro 9.7-inch (WiFi), released on 2018-12-05T18:08:46Z. The update package is 1.22 GB. This is a delta (partial) update that requires 11.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4c7270d492454e95fba16248ad80574530a162c7.zip.