Columbus (RNS 510) Octavia FL 12/2011

Hello,

I bought RNS 510 from ebay, 3T0 035 680 A (2011 year), it was from superb checked in Škoda dealrship and its legal from superb.

In dealership they tried to coded but no succes, then my friend which have original VCDS tried also and i cant get any sound except from RADIO.

Media, navigation, works great but no sound. Only AUX work.

Seller dont respond, but he send me only this manual http://www.r32oc.com/tutorials-guides/18955-rns-510-mfd-install-how-guide-inc-pin-swap.html.

I tried friends Bolero and he works great without any coding.

Can someone please help what to do so that i get any sound?

Thanks and Best Regards