iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone 7 (GSM), released on 2018-10-30T17:17:57Z. The update package is 1.51 GB. This is a delta (partial) update that requires 11.0.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 682f216b3a4cc59475eec0be8a437f4d16495e74.zip.