Dual V2 and Triple I/O firmware upgrade MAC OS method

What’s needed:

Homebrew https://brew.sh/


Type in terminal:

brew install avrdude

Download .hex firmware file and save it to know location on your mac (for example in your home folder)

Connect micro USB data cable to your MAC and Triple I/O

Find usb port with terminal command

ls /dev | grep usb


ls /dev | grep usb

Go to folder where you saved firmware .hex file (home folder in example below):

cd ~

Example command for flashing:

avrdude -v -p atmega328p -c arduino -P /dev/DEVICE_NAME -b 57600 -D -U flash:w:FILENAME

Replace DEVICE_NAME with the device name you’ve found in previus step (ls /dev | grep usb)

Replace FILENAME with the .hex file name you’ve downloaded

Final example flashing command:

avrdude -v -p atmega328p -c arduino -P /dev/cu.usbserial-1120 -b 57600 -D -U flash:w:triple_io_v4.03.ino_.eightanaloginputs.hex