All our tools have the interface to help communicate with unit via USB port. If you are the DSP3+ owner then connecting your tool to PC (Windows XP/7/8/10) will open Microsoft ActiveSync application and connect to your DSP3+ automatically as to any Windows based mobile devices. If you are the owner of old hand-held USAprog/DataSmart/VAGprog tool, then you need to install the “PC_link” software found on any Downloads tab under the product page that designed to communicate with your tool. The very last step for all tools is to select the Update menu and run an appropriate command such as Software Update/Active Function or any other ones.