iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone 7 Plus (GSM), released on 2018-10-30T17:18:08Z. The update package is 474.52 MB. This is a delta (partial) update that requires 12.0.1 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 89155084bb0920f32b00d152a6c423fc28eee1f4.zip.