iPadOS 11.4 (build 15F5061d) is an official Apple over-the-air update for the iPad 5 (WiFi), released on 2018-05-01T17:05:48Z. The update package is 181.21 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: ac2a2500fdfdf11ab22998367e16954e7be59b24.zip.