iPadOS 8.1 (build 12B410) is an official Apple over-the-air update for the iPad Air (WiFi), released on 2014-10-20T17:59:06Z. The update package is 97 MB. This is a delta (partial) update that requires 8.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 32559a6b9aa0f0b6cb4f871bd1d584c26ae3ae58.zip.