iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2018-12-05T18:08:05Z. The update package is 285.18 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bc3999f23d7454613065ce10691362672b0a737f.zip.