• Code 52 / driver signature error:
  • COM port not available or changes:
  • Conflicts with other drivers:

    • When attempting to install the CoolSand RDA driver on Windows 10 x64, users commonly encounter:

    Since the driver is unsigned, Windows will reject it. To bypass:

    ⚠️ Note: This setting resets after the next normal reboot. Use it only during driver installation.