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 633.35 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: a5697fa795ea12be49ac41accc649d4fb677b206.zip.