the driver isn’t loaded.
there should be
/dev/fb0 <--HDMI
and
/dev/fb1 <-- PiScreen
Check that page again, as i just updated it about 1 hour ago.
In summary, all you should need to do is;
1) sudo rpi-update
2) step 3 on the page, which is add one line to /boot/config.txt
Mark --OzzMaker.com --
