iPadOS 11.1.1 (build 15B150) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2017-11-09T18:05:25Z. The update package is 159.05 MB. This is a delta (partial) update that requires 11.0.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7218f370754c3774d3f37ea50022a99e5b1b4880.zip.