iOS 15.7.5 (build 19H332) is an official Apple over-the-air update for the iPhone 6s, released on 2023-04-10T17:12:00Z. The update package is 129.95 MB. This is a delta (partial) update that requires 15.7.4 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4dd53945b82b18447407752ea840d7931d1aa9ed.zip.