You won't be able to upgrade it by yourself. Also, it is not free of charge. If you need this function please contact your sales manager.
If you don't have any contacts with our Sales managers, please contact them on our official website https://teltonika-iot-group.com/ and click on "Contact Us" button. When you will click, please fill out the form and submit it.
Note: as a topic, please choose "Vehicle telematics".
Or you can send an e-mail with the description of your situation to firstname.lastname@example.org