Samsung RV411, unlock option to change the size of video memory

Hello, sorry for my english, I'm using a translator, I need to change the size of the fixed video memory of my notebook, to at least 512 MB​​, is there any option for this, and there is the possibility to unlock?

Notebook: Samsung RV411
Motherboard: Jinmao 1.2-L
BIOS link: http://tecnoservfoz.com.br/utilitarios/B...2BVSIG.bin