Using the Arduino Board Manager

This is the recommanded way of installation now.

Wait for the download to finsh and you are ready to blink:

Easy, isn't it?

In order to upload the compiled sketch to a connected board you need to install your flash tool first.

Manual install

Only if you prefer a Makefile based build over using the Arduino IDE or if you would like to help with the development of Sduino you will have to do a manual installation instead.