For those using a loader to make a version 21.3 interface work, the process typically follows these steps:

The is a functional workaround for hobbyists using older clone hardware, but it requires a "frozen" environment—no internet updates and specific launch procedures. If you are working on newer 2021+ vehicles, these older versions may lack the necessary label files and UDS data, making a genuine interface a much safer and more capable investment.

: For safety and security, it's highly recommended to obtain VCDS software and any loaders or updates from official or reputable sources. This minimizes the risk of malware, incorrect coding, or damage to your vehicle's electronics.