If you mean the USB-serial-JTAG device, it should simply show up as another serial port; you'd flash in the same way as you would over a 'standard' USB to serial adapter. (Note under Linux and macOS the device nodes may be named different, e.g. /dev/ttyACM0 instead of /dev/ttyUSB0) If I connected E...

Can anybody provide step-by-step instruction on any platform that you managed to flash the device on with Magic Built in USB JTAG? (ESP-idf Eclipse, VS Code platform IO)