iOS 15.7.4 (build 19H321) is an official Apple over-the-air update for the iPhone 7 Plus (GSM), released on 2023-03-27T17:13:28Z. The update package is 1.19 GB. This is a delta (partial) update that requires 15.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: bb7d335368b67e9c15b4f81a35249fa3b06388a6.zip.