I burned 2 discs on BenQ DW1620 with firmware B7W9 @ 8x using ImgBurn and they both could not be scanned on the BenQ drive with DVDInfoPro, so I try to scan them on my Sony DWQ58A and both discs have quality rating of 0%. I tried burning another disc at 16x but it started at 6x and a few minutes later the speed went down to 4x. This disc got 85% quality rating scanned on my BenQ drive.
I checked the B7W9 firmware with MCSE and MCC03RG20 is supported according to the list. My drive is OEM and had G-series firmware before I flashed it with the retail B7W9 firmware. Is this a common problem with OEM drives?
Btw, I also have Verbatim 16x DVD+R (MCC04) and I always get quality rating of 98% with them so I don’t think my drive is defective. Is there any way to improve the quality of my Verbatim 16x DVD-R? I would like to switch to -R if the quality is comparable to MCC04 because I heard -R are generally better than +R. Should I do the switch or stick to +R? Thanks in advance.