I've already spend almost 3 days 16 hours/day trying to figure it up my self, how to change bios version the notebook is working pretty well but it doesn't sees more than 2gbRAM, despite its bigger brother s73v which can sees 4gbmax RAM, causing me lots of headaches. I've already tried with benq official bios upgrade tool, with no luck. it throws this version of bios is not for this notebook. So I want to extract only the bios and install it without their tool. I know that for some of you, these aren't even candies , therefore I'd deeply appreciate your bother. Btw I've already downloaded the universal extractor with not pretty much straight forward guidance. Wish you all the best!!!! If I post it in a wrong tread I'll warmly ask a moderator move it where it should.