iPadOS 11.1 (build 15B5078e) is an official Apple over-the-air update for the iPad mini 3 (China), released on 2017-10-09T17:02:01Z. The update package is 122.16 MB. This is a delta (partial) update that requires 11.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bc90ad646a9b3e0e8610b9d16399d70f1aff3eaf.zip.