If the device is stuck (e.g., "ON" or "Red Light"), you may need to flash the firmware using an RS-232 cable and a PC tool like Key Benefits of Regular Updates Feature Expansion:
Open the Actions Burning Tool. You should see "No device connected." Load your firmware file by clicking the "Firmware" button and selecting the .bin file.
If this is for a bricked device, the safest path is to look for: