iPadOS 8.4 (build 12H143) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2015-06-30T15:51:16Z. The update package is 204.86 MB. This is a delta (partial) update that requires 8.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a499653d9468f666ca7426b9421689eeacc17c1e.zip.