After 4 weeks, defects

I have the radio now 6 weeks. The first few weeks I was hooked by the device sound with standard boxes okay, setting perfectly adequate, calls easily. Only the lighting is very bright with dimmer ON, night is to bear only the color red or dark blue, otherwise it is too bright. However, the radio also sitting in my car quite high, over the controls for heating / air.

But after 4 weeks the unit switched to the engine is started in the demo mode and all buttons were blocked. Only engine helped make. Although the change in medium, or transfer of a Folders on the USB flash drive the display showed the current title / Folder, but has continued to play the old titles. Since yesterday, the radio remained in demo mode, also from engine brings nothing more. So I've been using the flashing thing without music 500 km by Denmark drive müssen.Jetzt flies it out and goes back to Amazon.