iOS 13.4 (build 17E5255a) is an official Apple over-the-air update for the iPhone 11 Pro, released on 2020-03-10T17:21:29Z. The update package is 902.55 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: d1dff578368f5db938c8294c3855e93b775f5f87.zip.