iPadOS 12.1 (build 16B5068i) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2018-10-02T17:11:36Z. The update package is 258.44 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: 728e74fbc7ea7e56c00509e892f1619a2fa54648.zip.