Xj-ltd166s

hi guys having little problem in here. my friend have the above dvd-drive with a ds18 firmware. Why is that it cant read some pressed cds? it says on powerdvd 5.0 that “unknown disc type” something like that. i’ve already tried to update the aspi layer and unlock it’s region still the same. but when i test the cd on a standalone player it works… do you think its with the drive itself or just need some firmware updates? thanks

someone pls reply or comment on this