iPadOS 8.1.2 (build 12B440) is an official Apple over-the-air update for the iPad mini 3 (Cellular), released on 2014-12-09T17:49:04Z. The update package is 367.59 MB. This is a delta (partial) update that requires 8.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: f380ba8939687f3ad6b30480d134a020aeb4d04d.zip.