iPadOS 8.4 (build 12H143) is an official Apple over-the-air update for the iPad mini 3 (WiFi), released on 2015-06-30T15:51:15Z. The update package is 753.51 MB. This is a delta (partial) update that requires 8.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 60367e9cbfd4215de20be4f5d0f3f7b0556f0a23.zip.