iPadOS 8.1 (build 12B410) is an official Apple over-the-air update for the iPad 2 (Mid 2012), released on 2014-10-20T17:59:05Z. The update package is 901.2 MB. 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: 197486f4bc7194304ae67d38770ec410aaaa9f49.zip.