##We should check this line to make sure we have the correct part and fuse setting.
#you need pass the --enable-linuxgpio=yes option to configure and recompile avrdude.
and store it in a string.
从Arduino YUN的官方网站上下载的固件将无法正常工作，因为部分引脚位置发生了改变。我们已经为MS14重新配置了一个软件库来修正这些差异。他们可以直接从网上下载 firmware download link.
Once you have a Yun firmware, you can upgrade the firmware via WEB GUI.