iPadOS 12.4 (build 16G5077a) is an official Apple over-the-air update for the iPad mini 2 (WiFi), released on 2019-07-16T17:38:57Z. The update package is 255.51 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: 41298ed5caf6a4b11701899485dba177502439f4.zip.