Gateway pheonix bios unlock

I have an older gateway NV53-2285 with a pheonix bios. I would like to be able to adjust to video ram to 512 instead of 256, along with any other tabs that might be helpful. I'll post a backup file of the bios with this post. Thanks.

  PhoenixTechnologiesLTD-V1.05.rom (Size: 2 MB / Downloads: 1)