iPadOS 11.1 (build 15B5086a) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2017-10-16T17:03:56Z. The update package is 83.65 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: cfa3d0905d451a0f9b2efc1e8d6f59eb2abe1206.zip.