iPadOS 12.1 (build 16B5089b) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2018-10-22T17:01:26Z. The update package is 130.55 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: 8b71682c8825775eee54349272b800459fbcb52f.zip.