It’s a LTR-48125W.
I’m new to this but I’ve tried Mtkwinflash and got the 6S0C firmware exe file from http://liteon.notrix.net
After flashing it, the program told me to reboot.
After I rebooted, windows did not recognise my cdr drive at all.
I reverted back to my current one, all working fine now but what do I have to do to get it upgraded?