Run the driver utility included in the package. Without these, your PC will not "see" the phone in Brom or Download mode.
Unlock tools often require USB access to your phone. Malicious versions can: unlock tool software download for pc repack full
You can download the Unlock Tool software repack full version for PC from the official website or other reliable sources. Make sure to download from a trusted source to avoid any malware or viruses. Run the driver utility included in the package