iPadOS 8.4 (build 12H143) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2015-06-30T15:51:14Z. The update package is 1.22 GB. This is a delta (partial) update that requires 7.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a0bb7629044f49b0d5a7af97dc88563dac11aee2.zip.