i have optiarc 7170A and it has a lot of reading difficulties. I used some verbatim DVD-R discs and when i insert them, drive reports it as a blank disc, altough discs are properly recognized in my 3520AG... I tried some other dvd-r discs and they are working fine in optiarc.
discs that work are those Verbatim color DVD-R
discs that does'n work are verbatim mcc 03RG20
i tried the new 1.02b original FW from Liggy's site and it isn't helping.....