iPadOS 12.1 (build 16B5059d) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2018-09-18T17:20:06Z. The update package is 314.62 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7d49de6472d3c69f2cd0094e8ff958617fa9859b.zip.