Cheap soldering, faulty 9241A K-line transceivers, or defective USB chips (like the FTDI FT232RQ) can physically break communication. 2. Diagnosing the Symptoms

Plug the VCDS cable into your computer via its normal USB cable. Open . Click Devices →right arrow Scan and Parse .

Disconnect the ST-Link from the USB port and desolder/unplug the wires from the clone PCB. 4. Repairing an Atmega162-Based HEX-V2 Clone

Look at the PCB of your VCDS clone for a row of four small holes or pins labeled (or VCC). Connect them to the corresponding pins on your ST-Link V2 programmer: →right arrow →right arrow →right arrow →right arrow 2. Erase the Locked Microcontroller

Official Ross-Tech VCDS software updates contain new firmware loads. When a clone cable connects to internet-enabled VCDS software, the software checks the serial number. If it matches a known clone database, it alters the internal EEPROM or flash memory.