iPadOS 8.4 (build 12H4098c) is an official Apple over-the-air update for the iPad mini 2 (WiFi), released on 2015-05-11T17:46:05Z. The update package is 135.44 MB. This is a delta (partial) update that requires 8.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c548bf9eaa2c7ff09adb44f6d88dbd90794860a9.zip.