iPadOS 8.4 (build 12H4086d) is an official Apple over-the-air update for the iPad 2 (Mid 2012), released on 2015-04-27T17:47:03Z. The update package is 49.94 MB. This is a delta (partial) update that requires 8.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 33585b05c8c865603a7163465767cd09d6fc3ea7.zip.