close all firefox windows
extract this file to /home/username/.mozilla/firefox/5rlm0qbe.default
then go to that directory and change the pref.js file name to like prefs.js.orignal (i am not a big one for not backing up orginal files)
then change the file name of prefs.js.tweaked to prefs.js
restart firefox
i hope a few of you try this out i have had no problems with it and would like to get a few then possibly TheeMahn can add it to the releases of Ultimate Edition as like Ultimate Fox for our Ultimate Edition..