iPadOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2017-11-09T18:04:08Z. The update package is 1.05 GB. This is a delta (partial) update that requires 10.3.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fb5d482d5f3ad157030cf8501c566eed1c879421.zip.