: Using the official software to update the firmware on a clone cable can permanently "brick" the cable, making it unusable.
Ross-Tech offers a cable. This covers 99% of DIY needs. If you own three VAG cars, you are a professional reseller, not a hobbyist.
: Permits access to advanced modules like the Engine or Instrument cluster that might otherwise be locked. Top Features of VCDS Diagnostic Software
: It tricks the software into believing an unauthorized or generic third-party cable is a genuine Ross-Tech interface. Hardware Compatibility