# Tone Board DFU upgrade (online script) for MacOS and Linux

/bin/bash -c "$(curl -fsSL https://dl.khadas.com/products/tone2/firmware/tone2_pro/upgrade_dfu.sh)"

or

wget https://dl.khadas.com/products/tone2/firmware/tone2_pro/upgrade_dfu.sh
chmod 0777 upgrade_dfu.sh
./upgrade_dfu.sh