iPadOS 12.3 (build 16F5129d) is an official Apple over-the-air update for the iPad mini 4 (WiFi), released on 2019-04-08T17:04:11Z. The update package is 357.59 MB. This is a delta (partial) update that requires 12.2 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 58cf8b7ca2cfc69df09739b87fa5f24c30dece92.zip.