No 4977 is a BIOS itself, just an old BIOS. Use 4891 or 4983 BIOS'es, they are more recent and have more support features.
If you want editing features to your bios go for the 4981 series. The 4983 series cant be edited. And the 4977 isnt that bad,my 4976.02 is still kicking without a problem yet.
try the torrent sites/irc/or if you want info about firefuckers goto xbins or the actual page http://www.x-disk.com/portal.php there should be some info there for ya'.