[Help] Rebadged 1633s - Gigabyte W1608A

Major problem.
This drive can’t read/write from/to CDRW and DVD+/-RW disks. The disks are not detected. It tries to detect the disk, but gives up after trying for about a minute.

I have tried different firmware (crossflashed), but didn’t really fixed it. Didn’t try all the firmwares (1633s, 1653s, 710A etc.) available either.

But this drive can read DVD+/-Rs as well as write to DVD+/-R.

Is there anything else I should do, such as change the drive’s read speeds etc.?
I’m trying to give this drive to my cousin, but he would like the DVDRW read/write abilities working.

Thanks.