iPadOS 12.4 (build 16G5069a) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2019-07-09T17:15:43Z. The update package is 255 MB. This is a delta (partial) update that requires 12.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 0a197791d546c93e64819edb6781585e2fd9501f.zip.