RS 232 port

[Peter]

Is it a requirement to have to use this port ?
If so does, a converter to USB cable work ? TIA
Peter :confused::confused:

[Sicilian]

It's not a requirement no, you can simply flash the receiver using the USB method http://www.vuplus-support.co.uk/showthread.php?3-How-to-flash-a-VU-Duo-using-a-USB-stick

You would only ever need to use the RS232 port if a USB flash goes wrong, which I haven't seen happen yet and only read 1 report about it ever happening to anyone.