BTC 1004 - Impossible to read/write any CD, OK with DVDs

My BTC DVDRW1004 has a strange problem.
It cannot read or recognise any CD, CD-R or CD-RW, but will
read and write with no problem all DVDs (ROM, -R, +R, -RW and +RW)

This problem started after flashing version 49B3.
I’ve tried all other firmware versions, with no luck.
I developed a theory (and of course, I can be completely wrong), that when I flashed version 49B3, it destroyed the part of the firmware that controls the CDs reading/writing.
Can I be right?
If so, can anyone tell me how can I restore this part of the firmware?
Is there any firmware utility, that completely flash the firmware, and doing so restores the part of the firmware that controls the CD?
Does anybody has a solution to this problem?
Is anyone willing to read the flash rom (with mtkflash) from a working BTC DVDRW1004 and sending me the file?

Originally posted by TheFlash
This problem started after flashing version 49B3.
I’ve tried all other firmware versions, with no luck.

< ------ stuff deleted ------>

Is anyone willing to read the flash rom (with mtkflash) from a working BTC DVDRW1004 and sending me the file?

I’m not sure I understand.

If you have tried different fw versions, you must have some fw files and MTKFLASH also, so why on earth would you need one more fw file drawn directly from a drive?

Anyway, you can PM me your email addy.

Regards, Martin A

pls, send the files to jbrazuna@cats.pt
many thanks in advance.

Originally posted by TheFlash
pls, send the files to jbrazuna@cats.pt

Done.

Regards, Martin A