iPadOS 8.4 (build 12H143) is an official Apple over-the-air update for the iPad mini (GSM), released on 2015-06-30T15:51:08Z. The update package is 328.68 MB. This is a delta (partial) update that requires 8.1.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 489f57244b94bded1ccb09ae4dd279a2b9e51963.zip.