iPadOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPad Pro 9.7-inch (Cellular), released on 2018-10-30T17:06:38Z. The update package is 1.25 GB. This is a delta (partial) update that requires 11.0.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a18672ead57b0a6a6a262a50a84d50e976428299.zip.