Official VCDS software looks for specific digital signatures. When non-genuine hardware is detected, the software actively overwrites the ATmega162 flash memory or blanks out the FTDI EEPROM data, rendering the cable useless. Required Hardware and Software Tools
Updating the VCDS software on your PC while using a clone cable often results in the software "killing" the cable's firmware. vcds atmega162 reflash
Do not copy these blindly – verify against a working identical interface. Official VCDS software looks for specific digital signatures