iPadOS 8.4 (build 12H143) is an official Apple over-the-air update for the iPad 4 (GSM), released on 2015-06-30T15:51:11Z. The update package is 665.31 MB. This is a delta (partial) update that requires 8.0.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 5ee9b9a326f43004a5b391165c08f6590ba9bce2.zip.