iPadOS 8.1.1 (build 12B435) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2014-11-17T18:06:06Z. The update package is 364.05 MB. This is a delta (partial) update that requires 8.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: da7402e335c6b67e0b6a145aa8bf3a433adf43e9.zip.