iPadOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad Air (WiFi), released on 2017-11-09T18:03:42Z. 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: 995e19dd6131cf6e8f42117af6ed64cc4b415f24.zip.