iPadOS 11.2 (build 15C114) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2017-12-02T08:10:44Z. The update package is 1.1 GB. This is a delta (partial) update that requires 10.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 204a31e94bbbded269994f452d6d6e47a4594231.zip.