I still get an error:
avrdude: ser_open(): can't open device "wchusbserial1420": No such file or directory ioctl("TIOCMGET"): Inappropriate ioctl for device
The serial port is available and connected.
Is the command I am using correct?
avrdude -c arduino -P wchusbserial1420 -p ATMEGA328 -b 19200 -U flash:r:ManaSE_v3.7.hex:r
nope ， the failed reason is cause our board are using arduino nano bootloader instead of arduino uno
so you need to choose arduino nano
and the correct command in windows is
–C avrdude.conf -v -patmega328p -carduino -P + com + -b57600 -D -Uflash:w:\