I flashed my Philips DVD8631 to a BenQ DW1620 B7T9 using WinDWFlash and B7T9.cvt from
http://dvdpro.club.st/firmware/BENQ_FW.htm
The flash was successful - the drive now shows as a BenQ in Windows Device Manager. However, whenever I try to run an official BenQ firmware update exe, I get a “No Device Found!” error popup. I am trying to switch to the B7P9 firmware to compare performance, but now I’m afraid I won’t be able to update the firmware at all.
Please help!!!