iPadOS 11.3 (build 15E5178f) is an official Apple over-the-air update for the iPad 5 (WiFi), released on 2018-02-06T18:21:07Z. The update package is 275.43 MB. This is a delta (partial) update that requires 11.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6a8e28b0e5e432618b19b913439c060fde789f21.zip.