If you've tried these steps and still see "Failed 2," it may be time to check if your cable's internal chip has been "bricked" by a firmware update. If you'd like, let me know: What are you trying to run? What Windows version is on your laptop? Does the cable show up in Device Manager without errors?
This common issue occurs when a generic or clone HEX-V2 OBD-II interface loses connection with its custom launch program, often because an unauthorized Ross-Tech VCDS software update broke the security table match.
Use a genuine cable (even a cheap unofficial one with a proper FTDI chip) or buy a legit VCDS license. But if you must use Kolimer: clean install, admin rights, disable real-time AV temporarily, and never update VCDS past the version the loader supports.
Right-click and choose , making sure to check the box for "Delete the driver software for this device."
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