Recovery Prometheus via rs232 - 1. Connect pc and box with rs232. - 2. Open ALIUP.exe pc tool, choose right COM port,press "Open" button to select right file to update. - 3. Press "Start" button to start upgrade. - 4. Restart box, then it will upgrade automatically. - 5. After it finish the upgrade, power off and power on box. - Be careful, if there is any problem happened, error message will be showed on PC tool and frontpanel LED, try again, if this happens.