: Genuine software and updates are provided by Delphi Technologies through their official platforms like Delphi Auto Parts .
| Error Code | Message | Solution | | :--- | :--- | :--- | | | Device cannot start | This usually means a driver signature failure. Reboot into "Disable Driver Signature Enforcement" or install an official signed version. | | Error 39 | Driver corrupted | Uninstall via Device Manager (check "Delete driver software"), then reinstall Rev 1.0 cleanly. | | No COM Port | Adapter not found | Try a different USB cable or port. Rev 1.0 does not work with USB 3.0 ports reliably; use USB 2.0. | Delphi 100 251 Rev 1.0 Software Download