iPadOS 9.9.11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2017-11-09T18:03:43Z. The update package is 1.47 GB. This is a delta (partial) update that requires 8.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 62d3f946855ec2746e9627cb0a5ed292cd19b3a1.zip.