[SOLUCIONADO] Arduino Nano: Access Denied al puerto COM, ayuda por favor!!!

Muy buenas compañeros,

Creo que debo tener algún problema con el dispositivo.

Del manual de instalación de los drives de FTDI:

5 Troubleshooting
5.1 Windows 7 cannot find drivers for my device
This error can occur if the VID and PID programmed into the device EEPROM do not match those listed in
the INF files for the driver. The VID and PID programmed into the device EEPROM may be found by using
the USBView utility from the FTDI web site. These can then be checked against the VID and PID entries
in the driver INF files. If they do not match, that driver cannot be installed for that device without either
re-programming the device EEPROM or modifying the list of VID and PID numbers in the INF files.
Please note that only your own company VID and PID or FTDI's VID (0x0403) and FTDI PID issued for
use by the customer should be used in the EEPROM and INF files.
End customers should obtain modified drivers from the OEM of the device, and not necessarily edit the
files themselves.

Y yo con su aplicación USBView, puedo ver que solo tengo conectado el arduino, pero me dice: 0x0409: "FT232R USB UART"

¿Creéis que es ese el problema? ¿Es un error del firmware?

No me entero con estas cosas...

Gracias!