iPadOS 12.1.1 (build 16C50) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2018-12-05T18:07:38Z. The update package is 1.57 GB. This is a delta (partial) update that requires 10.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bc44fb1eea150711d4cf9b0ae2f22fcf3ab34a9f.zip.