Thanks for your tip, but it did not work on nuvi 765.
Anyone who has additional tips? Grateful for all ideas to consider.
The nuvi unit will allow you to change opening logo. If the volvo is default logo, you can try this way to modify the logo:
Changing Opening Logo
1. Select 'System', to enter the system setting menu;
2. Choose 'Display', then select 'Change...' for 'Splash Screen';
3. Select picture from unit internal storage or Memory Card;
4. Wait for reading picture, and wait for 3 sec after picture displaying, then choose 'yes' to confirm to change opening logo.
5. Restart your unit, then you find the logo changed.