iPadOS 8.1.1 (build 12B435) is an official Apple over-the-air update for the iPad 4 (WiFi), released on 2014-11-17T18:06:05Z. The update package is 346 MB. This is a delta (partial) update that requires 8.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 2217ab206af2d4532274937cee72331094d75fe2.zip.