First thing is to download Debian Jessie netinst image from mirror:
wget http://cdimage.debian.org/debian-cd/8.1.0/i386/iso-cd/debian-8.1.0-i386-netinst.iso
After standard Debian installation procedure you can download latest linux-phc from their forum: Continue reading “Installing phc-linux undervolting module on Debian Jessie”