hi aqua hi reddragg0n, i empirically flash vga with flasher that came up in time the card was produced respectively have been sold. Second i think there are specific routine for specific ROM. BTW i flashed a GF2 MX400 with 4.28 I usually flashed my 7800gs with 5.22 works fine but for fx5200 and back issues won't.
This GF has DVI? If so, it's main problem. Even if you'll flash it, it won't work. Only these with single VGA output are flashable IIRC. BTW, I always use this string to flash with nvf: nvflash -4 -5 -6 -j (romname) You can try eraseeeprom first, like rubberduck said.