Blu.7z

Since Windows and macOS don't always support 7z files natively for extraction, you’ll need a third-party utility:

Because "blu" isn't a standard system name, it usually refers to one of three things: blu.7z

Visit the official 7-Zip website and download the version for your OS. Since Windows and macOS don't always support 7z

Choose "7-Zip" > "Extract Here" or "Extract to 'blu'" to see what’s inside. ⚠️ A Note on Safety blu.7z