Ensure you have WinRAR or 7-Zip installed (these files are usually heavily compressed .rar or .zip archives).
Temporarily turn off Windows Defender Real-time protection. (Note: Many flashing tools modify system drivers, which Windows Defender incorrectly flags as "HackTool" or "Trojan." Only do this if you trust the source).
✅ Recommended Safe Action
Identify the exact software – is it Hitachi MasterTool, or something else (e.g., Master Tool for data recovery, Master Tool for CNC)?
Visit the manufacturer’s official website.
Download only from HTTPS domains owned by the vendor.
Scan any downloaded file with Windows Defender or Malwarebytes.
Avoid any executable from file-sharing sites (mediafire, mega, torrents, etc.).