Disclaimer: Modifying phone firmware, IMEI, or network locks may violate local laws. Always ensure you have proper authorization and ownership of the device before using these drivers for repair or modification.
Many basic phones (keypad style) use obscure Coolsand chipsets that Windows simply doesn't recognize out of the box. They often show up as "Unknown Device".
If you cannot get the driver to work, consider these alternatives:
: Use a tool like 7-Zip to extract the downloaded archives. Many official files are protected with the password
Never use a tool that asks for a "Boot Key" unless you know the specific key combination for your phone (usually Volume Down + Power).