I suppose if it does damage your car then its the chance you take with these illegal cables.
By that token, surely nobody should use the Ross Tech ones as only the VAG ones are 'legitimate'?
The Ross Tech ones are fully tried and tested on the vehicles they are designed to work with. The illegal Ebay ones are basically reversed engineered from the Ross Tech cables and as such won't be as 100% reliable
As far as I can see, if I only want to code a 2011 Golf, the Ross Tech Micro-CAN USB would do the job (rather than the full HEX-USB +CAN).
I can't find anything on Google to suggest that the golf is considered a 'difficult' car that would require teh EX-USB +CAN - which one do people on here use?