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 1.89 GB. This is a delta (partial) update that requires null already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 48424515e50b068ee7b881333a8414f10764bb2b.zip.