iPadOS 11.4 (build 15F5061d) is an official Apple over-the-air update for the iPad 5 (Cellular), released on 2018-05-01T17:05:49Z. The update package is 181.1 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: ac6ec96aded70d789ce5df6b07a832fc657be07b.zip.