Windows based firmware flash update for Sony DDU810A Slim 8X DVDROM:-
1. Download and unzip the DDU810A_KD41.zip into your desktop.
2. In ¡°DDU810A_KD41¡± folder, please search for the ¡°Windows¡± folder.
3. In ¡°Windows¡± folder, please make sure you have the administrator right, and double click on ¡°SONY DDU810A_KD41.EXE¡±
4. Click on ¡°Update¡± button. This may take as long as two minutes. Please wait for the process to complete.
5. You should see ¡°Update Successful.¡±
6. Please re-boot your computer clicking ¡°Yes¡±.

DOS based firmware flash update for Sony DDU810A Slim 8X DVDROM:-
1. Unzip the DDU810A_KD41.zip into your bootable USB key.
2. In ¡°DOS¡± folder, just type ¡°KD41.BAT¡±.
3. Please wait the drive to finish updating.
4. You should see ¡°Flash operation complete!¡±
5. Please re-boot your computer.