iOS 12.1 (build 16B92) is an official Apple over-the-air update for the iPhone 6, released on 2018-10-30T17:16:54Z. The update package is 368.68 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: ab9c0bb67d547fcc7828d477e70dfdd505841f0e.zip.