iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2018-12-05T18:07:46Z. The update package is 261.15 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: a794f10922b1b750b53309e9514c5434f23d77ef.zip.