To get the most out of the unit, download and install the following items on your
Instruction Manual (PDF): Contains descriptions of all functions.
PC application software: For firmware upgrades and data management.
Go to http://esupport.sony.com/
Enter your model number (NV-U44), then click "Continue."
Download the desired item.
To download the manual, select "Documentation" "Instruction Manual. "
To download the software, select "Drivers" "nav-u tool. "
For details, follow the instructions at the website.