: Ross-Tech does not support third-party loaders or "clone" cables. Support is limited to official registered users. For users with legacy "dumb" interfaces (K-line cables), is the official alternative that does not require a loader. Are you using a genuine Ross-Tech cable aftermarket interface
"Loaders" (such as VCDSLoader.exe) are typically unofficial tools designed to allow non-genuine (clone) HEX-V2 or HEX-USB+CAN cables to work with the VCDS software. vcds 21.3 loader download