iOS 9.9.15.7.4 (build 19H6321) is an official Apple over-the-air update for the iPhone 7 (Global), released on 2023-03-27T17:11:10Z. The update package is 3.93 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: ebfb54efcbfa0294a1e90d513017d7aea8ee7c1b.zip.