I had issues with the PC using a port number higher than the RS232 software can use.
Here is my note on that.
Note this:
Edited June 11 2021:
Here are some more note on USB to RS232 serial devices.
Here is how I got this to work with a USB to RS232adaptor.
I had plugged the USB to RS232 serial device into a USB port and it loaded the driver as port 14.
The GT Media recovery tool only allows for ports 1 to 9.
I use Windows 7, this may be different for Windows 10.
I opened "My computer" / Control panel / View devices and printers.
There I can see the serial device and the port number it is using, for me that was 14.
I then clicked on it and when to Hardware / Properties / Change settings / Drivers / Uninstall.
Then I plugged in the USB to RS232 to a different USB on the other side of the laptop and it reloaded the driver as port 4.
Then I could set the recovery tool for port 4 and V7Pro.
I then worked.
Owen
viewtopic.php?f=32&t=26190&p=114939&hil ... ws#p114939
Dishes; 2x3m, 4.1m, 10+ ku, 2 movers, USARLS. V8Pro2, GTC, Finder2 + Pro1, Finder-Meter V8X / UHD V7Pro GT/X Combo, Freesat V8Ultra. Sats 100.5E to 177W. I'm a Sat hobbyist who helps out.