iOS 13.4 (build 17E5255a) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2020-03-10T17:21:23Z. The update package is 826.98 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: 1ac9f091276e130ef0ed358be72dc4dc4e7a2ec6.zip.