Due to its nature, Windows Defender or other AV may block the setup. Disable real-time protection only during installation.
Before connecting your phone, install Samsung USB or COM port drivers for your model. Samsung 2g Tool V3.5.0040 Setup
Right-click Samsung_2G_Tool_V3.5.0040_Setup.exe → Run as Administrator. Due to its nature, Windows Defender or other
Open the tool, choose the correct COM port from Device Manager. Due to its nature