I saw yesterday that Dell Support has a new firmware upgrade for the Philips8631 (benq 1620) drive available. I don't plan on upgrading, as I'm happy with how my drive is currently performing.
Would be better if they would finally implement SolidBurn in the firmware of Philips DVR1628k/1648k.At the moment, the best option is to crossflash these drives to BenQ DW1640...
Providing the firmware version and a link was a good idea.