iPadOS 9.9.11.1 (build 15B93) is an official Apple over-the-air update for the iPad Air (WiFi), released on 2017-10-23T17:01:06Z. The update package is 1.2 GB. This is a delta (partial) update that requires 9.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c2918dfc8710056c046a87fb2954613a79f62435.zip.