Macos-sierra-10.12.6-french.iso Now

You can download the official macOS Sierra 10.12 disk image directly from Apple using a web browser. Apple Support Official Apple Download macOS Sierra 10.12 Download Link from Apple Support. Install the Package : Double-click the downloaded file, then run the

It seems you've provided the filename macos-sierra-10.12.6-french.iso , but there is no actual "long content" or specific question attached to your message. macos-sierra-10.12.6-french.iso

If you have access to a real Sierra 10.12.6 installer (in French), you can make a clean ISO yourself: You can download the official macOS Sierra 10