soundsystem

Hello Guys, I'm new here .. so hello ;) I own a Cupra 2019 and I wanted to know \ ask few things: 1. How can i update the multimedia system, and is it necessary at all ? 2. How can i change the theme of it ? if it even possible ? 3. The car came without navigation system :( Can i install it...

Hi guys and gals. Right, I'm looking to upgrade my soundsystem sometime in the near future. I have a decent amp and know what sub i am getting. Was just wondering what people have done in their mk2's? And was also wondering what sizes everything is. I ideally would like to up grade...