iPadOS 12.1.1 (build 16C5050a) is an official Apple over-the-air update for the iPad Air (China), released on 2018-11-15T18:04:21Z. The update package is 261.52 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: d716acc75f662f08d2c4fb8d26c7eb6a1b340ab9.zip.