iPadOS 8.1.1 (build 12B435) is an official Apple over-the-air update for the iPad 4 (GSM), released on 2014-11-17T18:06:05Z. The update package is 1.18 GB. This is a delta (partial) update that requires 7.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 41c25cda33d43d1e8562df9615401f1ba8aad9aa.zip.