There are two methods to recognize your VGA BIOS version:
1. Copy VGA BIOS file and extract to DOS startup floppy disk. (For Windows 2000/XP, you need a startup disk to restart the computer in MS-DOS mode.).Reboot and enter DOS mode, then, change the command prompt to A:\> prompt, type [BIOS flash utility name] -v (example: gvf1a -v) and press Enter , and then you can get the VGA BIOS version.

2. Use @BIOS VGA utility:
a. Install @BIOS VGA from driver CD or download it from VGA model webpage
b. You may see “BIOS version” which is "F20" after executing @BIOS VGA (see photo)