iPadOS 12.1 (build 16B5068i) is an official Apple over-the-air update for the iPad mini 4 (Cellular), released on 2018-10-02T17:11:38Z. The update package is 259.72 MB. This is a delta (partial) update that requires 12.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7c7343fbb7f77167864533bc9edc38bd9114ef3c.zip.