iPadOS 12.4 (build 16G5038d) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2019-05-28T17:07:03Z. The update package is 194.09 MB. This is a delta (partial) update that requires 12.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 056dfd7f40733662534730e2a6f26c6bf4b760cf.zip.