iPadOS 11.1.2 (build 15B202) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2017-11-16T21:16:54Z. The update package is 1.02 GB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 33126ae975c5dfcea21d08338acfaadb8329e05b.zip.