, find the Delphi device under "Ports (COM & LPT)" or "Universal Serial Bus controllers," and manually update the driver by pointing Windows to the folder inside your Delphi software installation directory. Check the COM Port:
High-speed USB 3.0 ports cause timing errors during firmware flashing.
Ensure the DS100E is connected to both the and a vehicle (via OBD port) . The vehicle's ignition must be ON to provide sufficient power for the firmware write. Configure COM Ports:
Ensure it appears as or Delphi VCI . If it shows "Unknown Device," right-click and manually point the driver update to the C:\Program Files\Delphi\Drivers folder.
If your Delphi DS100E firmware update is failing or getting stuck, it is likely due to incorrect COM port selection or driver issues. Common Solutions