iOS 12.1 (build 16B5077c) is an official Apple over-the-air update for the iPhone SE, released on 2018-10-09T17:06:01Z. The update package is 417.88 MB. This is a delta (partial) update that requires 12.0 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: a27a4d116bb77b7cfb72e489ca9fe4a03484bfa1.zip.