iPadOS 11.4.1 (build 15G5054c) is an official Apple over-the-air update for the iPad 5 (WiFi), released on 2018-05-30T17:04:49Z. The update package is 221.26 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: 39421156ddedb0bc50c59b9eca8ecbbebf9ebfe0.zip.