I'm new to this forum, and I want to know some noob question about the navigation system. I have a 2003 E46 M3 with OEM navigation system. I want to know what system do I have and what version.

I checked the menu and setting, on the top right hand side says.... SW 4-1/80 ...does this means I have the MK4 system? but which version? do I have to update to the latest version?

thanks