iPadOS 8.4 (build 12H143) is an official Apple over-the-air update for the iPad mini 2 (WiFi), released on 2015-06-30T15:51:14Z. The update package is 401.52 MB. This is a delta (partial) update that requires 8.1.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: e1b5378ca6320d652a9727956e7ee7e8f82b3f6c.zip.