A number of sites. These are two useful ones I used to research & then flash my DVD drive's firmware.
For info:. . <a href="http://www.dvddemystified.com/dvdfaq.html" target="_blank">http://www.dvddemystified.com/dvdfaq.html</A>
For hacks:. . <a href="http://perso.club-internet.fr/farzeno/firmware/" target="_blank">http://perso.club-internet.fr/farzeno/firmware/</A>