Will fit into the dash of an 05 superb classic???????

Thats a superb mk1, so you'll be looking at the original MFD for oem which is a very basic system simillar to the MFD2 in the octavia, otherwise any standard double din nav system (pioneer, alpine etc.) will fit.

I have a blaupunks single din one that I had in the car and it was taken out as i was going to trade it in but HID decided she wanted it so a year later it was put back in when you put the disk in it says that we are not on a recognised rout even though the cars on a main road any ideas what could be wrong as we may keep it and put it in our new to us superb, all the conections are correct