iPadOS 12.1.1 (build 16C5050a) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2018-11-15T18:04:20Z. 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: a75f1c7ddaaba1fe6e914affe2621637db79c73a.zip.