iPadOS 12.1 (build 16B5084a) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2018-10-15T17:02:58Z. The update package is 167.3 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a63e4db16bf060d34f1e396d577010ea6bf1dee9.zip.