iOS 15.7.1 (build 19H117) is an official Apple over-the-air update for the iPhone 12, released on 2022-10-27T17:59:17Z. The update package is 2.97 GB. This is a delta (partial) update that requires 14.8 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 7231206b3ee5062f1c2e5f17060d79bd145619d5.zip.