Seems like a 'hardware' topic.
Have you installed the CH340 driver?
https://www.badcasserole.com/arduino-nano-with-ch340-chips-connection-issues/
#I installed mobiflight today. However, an error message appears during installation. What can I do?
elder sandal
agile thorn
first question, is the board really an Arduino Pro Micro, like Mobiflight recognized it to be?
@elder sandal Pro Micros do not use the CH340G chip because the AT32U4 micro controller does all the usb communications natively.