iPadOS 12.4 (build 16G5027g) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2019-05-15T17:04:51Z. The update package is 203.09 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: 8ff134acc1b2c7830233caa1506aa4a4ce22124f.zip.