iOS 12.0 (build 16A5339e) is an official Apple over-the-air update for the iPhone 8 Plus (GSM), released on 2018-07-30T17:09:31Z. The update package is 1.35 GB. This is a delta (partial) update that requires 11.4.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: c89cc2a7f6aca5a47e6a92ac9960dcbd35d1ed62.zip.