In Windows Device Manager, the STB should appear under "libusb-win32 devices" or "Ports (COM & LPT)" without a yellow exclamation mark. If it shows as "Unknown Device," right-click and manually update the driver from the tool's installation folder. 4. Disable Firewall/Antivirus
: You may need a "null modem" or cross-over cable where the TX and RX pins are swapped. If using a TTL converter, ensure the ground (GND) pin is also securely connected. Baud Rate Mismatch “bootrom error, wait for get, please check stb