iPadOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPad Pro 2 (12.9-inch, WiFi), released on 2018-10-30T17:07:03Z. The update package is 1.3 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: dcf335ad84f5b1bfa2ce72fb0ca2167406889456.zip.