iOS 13.4 (build 17E5255a) is an official Apple over-the-air update for the iPhone 11, released on 2020-03-10T17:21:28Z. The update package is 899.55 MB. This is a delta (partial) update that requires 13.3.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 42b0b5a51ae94f3bb927a352638f8971cabadb8d.zip.