iPadOS 11.4.1 (build 15G5054c) is an official Apple over-the-air update for the iPad mini 2 (China), released on 2018-05-30T17:04:43Z. The update package is 186.34 MB. This is a delta (partial) update that requires 11.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: b76b6c37a680b5fcdc3e6bcd22b9d6331651b021.zip.