iOS 13.4 (build 17E5255a) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2020-03-10T17:21:24Z. The update package is 103.2 MB. This is a delta (partial) update that requires 13.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 6b5b371fa5da9970b39e7a6b4f621cb815cbf541.zip.