iPadOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPad 5 (Cellular), released on 2018-09-12T19:07:01Z. The update package is 1.25 GB. This is a delta (partial) update that requires 11.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 17518bd1ae7da3c3933da4e37fe3a846d7ea84f2.zip.