iPadOS 12.1 (build 16B5077c) is an official Apple over-the-air update for the iPad 6 (Cellular), released on 2018-10-09T17:05:38Z. The update package is 418.66 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3b4901a367fef650cd0be8e290ddb310c1998407.zip.