Flash Bios should be taken seriously. You may destory it.
*.bin files are binary files (you cannot read them unless you use special program), they are for bios or firmware flash/upgrade. Normally, a specail program (supplied by component manufacturer) is need for bios flash or firmware updates.
It sounds like you are trying to upgrade firmware in your G-card.
If you do flash upgrade to any component without use manufacturer's official program and release, you run into double risk. (1) You may make it unuseable (2) Manufacturer will not honour warrenty.