iPadOS 11.1.2 (build 15B202) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2017-11-16T21:16:58Z. The update package is 163.09 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: 9dee29bba011f40b0592d3e36d99685cdc554b3c.zip.