Troubleshooting a Connection Error

Instructions:

Particularly on initial installation, some users experience difficulty establishing communication with the DSC Sport Tuning Software. This is usually due to a mismatch between the COM Port your computer is using for the CP210x USB driver and the COM Port the DSC Sport Tuning Software is looking for. In this lesson, we walk you through how to match your computer’s COM Port settings to that of the Tuning Software. Reminder: Always close out of the Tuning Software and disconnect and reconnect the DSC Sport controller after making any COM Port changes!

The following instructions are worded directly in relation to Windows 10, the same settings can be found in Windows 7 and 11 as well, but the instructions may very slightly

  1. Checking Windows Download Permissions
    • Open Windows Settings then Apps & Features
    • At the Top it should say “Choose where to get apps”
    • Make sure “Anywhere” is selected in this box
  2. Checking if Windows Driver is Installed
    • Open Windows Settings then Apps & Features
    • This will show a list of installed applications on your PC
    • Scroll down towards the end of this list
    • Check to see if “Windows Driver Package – Silicon Laboratories” is installed
    • If this is not present a link to a separate download can be found here: DSC Driver Download
    • Be sure to read the instructional PDF to install the Drivers correctly
  3. Checking your COM port settings.
    • With the DSC controller connected, navigate to your computer’s control panel, then Device Manager.
    • This will show a list of computer components, find the “Ports (COM & LPT) and click to expand the dropdown
    • Locate Ports > Silicon Labs CP210x USB to UART Bridgeand identify the COM port number. Example: (COM3)
    • Navigate to the DSC Sport tuning software. Go to Tools > Serial Settings. Then select the port number identified in the device manager
  4. Updating Drivers
    • With the DSC controller connected, navigate to your computer’s control panel, then Device Manager.
    • This will show a list of computer components, find the “Ports (COM & LPT) and click to expand the dropdown
    • Locate Ports > Silicon Labs CP210x USB to UART Bridge
    • Right Click this driver and select “Update Driver”
    • Select “Search Automatically for Drivers”
    • This will either update the driver or let you know you if you already have the most up to date one installed
  5. Resetting COM port settings.
    • With the DSC controller connected, navigate to your computer’s control panel, then Device Manager.
    • This will show a list of computer components, find the “Ports (COM & LPT) and click to expand the dropdown
    • Locate Ports > Silicon Labs CP210x USB to UART Bridge
    • Right Click this driver and select “Properties”
    • Select “Port Settings” in the top bar, then click “Advanced…” at the bottom
    • At the bottom, you will see which COM port is selected, you can click this and it will show a dropdown list of COM ports
    • Select a port that is not in use, somewhere between 1 and 10, then click “OK” and close these windows
    • Navigate to the DSC Sport tuning software. Go to Tools > Serial Settings. Then select the port number selected in the device manager
    • Video walkthrough can be found at our Youtube page: Troubleshooting a COM Connection Error