iPadOS 12.1 (build 16B5077c) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2018-10-09T17:05:22Z. The update package is 235.1 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: c35161ae26736474f6ace66000762f3c6267dc9a.zip.