: If the interface has flashing red lights, use the VCI Config Utility to re-download the firmware. Click the "Net" button, then "Config," and go to the "Update" tab to force a fresh download.
: Genuine users should contact Ross-Tech Support directly. They can verify your serial number and manually reset the license if a software conflict caused the revocation. For Clone/Non-Genuine Interfaces Vcds License Revoked Fix
From then on, John made sure to:
These involve using malicious loader executables that disable your antivirus and rewrite your laptop’s registry. Even if you get the clone working again (usually for one software version), you risk: : If the interface has flashing red lights,
If authenticity is confirmed, the fix shifts from legal verification to procedural correction. The most common solution is a clean reinstallation of the drivers and software. Start by completely uninstalling any existing VCDS software and the underlying FTDI (Future Technology Devices International) drivers, which manage USB-to-serial communication. Windows often retains these drivers, leading to conflicts. Using a driver cleaner or manually deleting the drivers from the Device Manager is advisable. Next, download the latest official version of VCDS directly from Ross-Tech’s website. Install the software before plugging in the interface. When prompted to connect the cable, Windows will reinstall the correct, signed drivers. This process resets the digital handshake, clearing any corrupted handshake data that may have triggered the false-positive revocation. They can verify your serial number and manually
: A failed or interrupted firmware update can cause the interface to enter a "questionable state" or show flashing red lights. Use the VCI Config Utility to force a firmware re-update.