iPadOS 8.4 (build 12H4086d) is an official Apple over-the-air update for the iPad 3 (WiFi), released on 2015-04-27T17:47:03Z. The update package is 118.98 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: 8fbcc9507986b527a05dcd16bdcf2fffcd36009b.zip.