iPadOS 9.9.11.0 (build 15A372) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2017-09-12T19:06:22Z. The update package is 1.18 GB. This is a delta (partial) update that requires 9.3.5 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f436ab45d081172eae04205f56611a81acbcb4cf.zip.