A typical way would be: - boot with 4.8.6 - git clone linux-stable.git - git checkout v4.8.6 - make localmodconfig; press ENTER for the rest to choose the default - Edit .config file; better change CONFIG_LOCALVERSION to a unique suffix (e.g. "-test") - make, make install - Run "grub2-mkconfig -o /boot/grub2/grub.cfg" to update GRUB menu entries