maria1984, please ignore this post - it's really meant for mciahel and will probably confuse you. More in the way of technical discussion and not likely to offer any useful help for your situation.

I'm not so sure about that. LG firmware for certain earlier models came as a separate flasher and binary file, rather than the all in one .exe file we get for newer LG writers now. Firmware of that sort occasionally worked on certain GWA models as well because those don't seem to have the stringent model checks the new firmware versions now have. There was a guy here who successfully flashed his GWA-4160B with GSA-4160B firmware. The drive model after flashing stayed as GWA-4160B, so it wasn't a case of cross-flashing.

The problem is that this will only work if the GWA version of the drive is identical to the GSA version hardware-wise. Not all GWA and GSA models are identical. GSA-4163B, for example, uses a Renesas chipset but the GWA-4163B uses a Panasonic chipset, as I understand it. I'm also unsure about notebook models. If the components are the same but just layed out differently to suit the smaller drive chassis, it might work.

The problem of course is nobody knows for sure until you try