iPadOS 8.1.1 (build 12B5436) is an official Apple over-the-air update for the iPad Air 2 (Cellular), released on 2014-11-17T18:06:02Z. The update package is 1.9 GB. This is a delta (partial) update that requires 8.1.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e11918d8d7cd841cde654e07e4918d7c71a5af9f.zip.