iPadOS 8.4 (build 12H143) is an official Apple over-the-air update for the iPad 3 (CDMA), released on 2015-06-30T15:51:10Z. The update package is 295.38 MB. This is a delta (partial) update that requires 8.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7b3c5ddf008ce27d0b8a6ce6d917345d950a5f0b.zip.