iOS 12.4 (build 16G5027i) is an official Apple over-the-air update for the iPhone XR, released on 2019-05-20T17:07:19Z. The update package is 77.12 MB. This is a delta (partial) update that requires 12.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ff6276d1a1e4bc54ad8ad486e7499a725b6fb80c.zip.