iPadOS 8.1.1 (build 12B5435) is an official Apple over-the-air update for the iPad 4 (WiFi), released on 2014-11-17T18:06:02Z. The update package is 1.65 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: 1cbb95ab4175adf8b087f7c1d2fd120d70e3eea6.zip.