NAV Road Map Installation Using USB Stick. INFORMATION The Navigation road map can be installed onto the head unit in the vehicle using a USB stick connected to the USB connector in the center console in the vehicle. ? 32GB USB stick is necessary ? Desired NAV road map version can be retrieved from the HDD-Update console PROCEDURE 1. Copy the desired NAV road map from the HDD-Update console onto a 32GB USB stick. Refer to Attachment. 3. When prompted, enter the 20-digit enabling code. 4. Start the NAV road map installation and follow the on-screen instructions. WARRANTY INFORMATION Not applicable. ATTACHMENTS View PDF attachment B651015_Attachment.