try pressing 6 and 2 to see if the serial may roll across the display will look some thing like FD2002M123456
If not http://www.i-hacked.com/content/view/213/77/
and
http://www.fitaudio.com/index.php?CategoryID=13
then mail me at codehelp(at)hotmail.co.uk
hay88
April 2011