iPadOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPad 6 (Cellular), released on 2018-10-30T17:07:30Z. The update package is 1.27 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: 5cb075cc089219114451f6c41bb7449da94d3a24.zip.