On your head unit, navigate to Settings > Car Settings > Factory Settings . Common passwords for these units include 8888 , 000000 , or 1617 .

Look for an option labeled "Logo Setting" or "Local Update" . If your file is correctly named and formatted, the "Logo" option should become selectable.

For most standard Android head units, use a resolution of 1024x600 . For premium wide-screen models, look for 1920x720 .

The file must be named exactly zxdzlogo.png for the system to recognize it during a local update.

If you are looking for specific car brand logos (like Toyota, Honda, or Audi) formatted for your ZXDZ unit, community forums like XDA Developers or specialized head unit resource sites are the best places to find pre-made ZIP packages containing hundreds of vehicle-specific PNGs.