Originally Posted by yangxi
BENQ DW1620 “OEM” flash to “RETAIL” firmware
step1: ( G7K9 -> DW1600 firmware )
step2: ( dw1600 -> 1620 )
step3: ( latest dw1620 firmware)
Thanks very much yangxi, I converted to DW1600 first, then to DW1620, and finally updated to B7L9 firmware without any problems at all. I followed your 3 downloads. For anyone out there with a G firmware I advise you to follow yangxi instructions to turn your burner into a true BenQ DW1620 using B firmware.
Just a note here, I and several others could not upgrade our OEM with the G or B firmware so I followed the instructions above and cross burned my OEM G drive to a Retail B firmware DW 1620. Now I have no problems updating firmware with B series and the computer sees it as a BenQ DVD DD DW1620 instead of ATAPI DVD DD 2X16X4X16.