iPadOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2017-11-09T18:04:12Z. The update package is 159.58 MB. This is a delta (partial) update that requires 11.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 3222b514ebca120ffec5a3fb77b094d2125aae28.zip.