FAILED: <Elitegroup GF8200A>

[Knowledge]

detected NVIDIA MCP78S

DMI string system-manufacturer: "ECS"
DMI string system-product-name: "GeForce 8000 series"
DMI string system-version: "1.0                   "
DMI string baseboard-manufacturer: "ECS"
DMI string baseboard-product-name: "GeForce 8000 series"
DMI string baseboard-version: "1.0                   "
DMI string chassis-type: "Desktop"
Found chipset "NVIDIA MCP78S" with PCI ID 10de:075c.

wasabi@wasabi-G:~/Descargas/bios$ sudo flashrom -p internal -r backup.rom
flashrom v0.9.6.1-r1563 on Linux 3.9.3-pf (i686)
flashrom is free software, get the source code at http://www.flashrom.org

Calibrating delay loop... OK.
Found chipset "NVIDIA MCP78S".
This chipset is marked as untested. If you are using an up-to-date version
of flashrom *and* were (not) able to successfully update your firmware with it,
then please email a report to [e-mail] including a
verbose (-V) log.
Thank you!
Enabling flash write... This chipset is not really supported yet. Guesswork...
SPI on this chipset is WIP. Please report any success or failure by
mailing us the verbose output to [e-mail], thanks!
Mapping NVIDIA MCP6x SPI at 0xfbf80000, unaligned size 0x544.
Please send the output of "flashrom -V" to [e-mail] with
your board name: flashrom -V as the subject to help us finish support for your
chipset. Thanks.
OK.
Found Winbond flash chip "W25X80" (1024 kB, SPI) at physical address 0xfff00000.
Reading flash... done.
wasabi@wasabi-G:~/Descargas/bios$ sudo flashrom -p internal -w 78NAA512.ROM
flashrom v0.9.6.1-r1563 on Linux 3.9.3-pf (i686)
flashrom is free software, get the source code at http://www.flashrom.org

Calibrating delay loop... OK.
Found chipset "NVIDIA MCP78S".
This chipset is marked as untested. If you are using an up-to-date version
of flashrom *and* were (not) able to successfully update your firmware with it,
then please email a report to [e-mail] including a
verbose (-V) log.
Thank you!
Enabling flash write... This chipset is not really supported yet. Guesswork...
SPI on this chipset is WIP. Please report any success or failure by
mailing us the verbose output to [e-mail], thanks!
Mapping NVIDIA MCP6x SPI at 0xfbf80000, unaligned size 0x544.
Please send the output of "flashrom -V" to [e-mail] with
your board name: flashrom -V as the subject to help us finish support for your
chipset. Thanks.
OK.
Found Winbond flash chip "W25X80" (1024 kB, SPI) at physical address 0xfff00000.
Flash image seems to be a legacy BIOS. Disabling coreboot-related checks.
Reading old flash chip contents... done.
Erasing and writing flash chip... Erase/write done.
Verifying flash... VERIFY FAILED at 0x000ff300! Expected=0x00,
Read=0xff, failed byte count from 0x00000000-0x000fffff: 0xff
Your flash chip is in an unknown state.
Get help on IRC at chat.freenode.net (channel #flashrom) or
mail [e-mail] with the subject "FAILED: <your board name>"!
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DO NOT REBOOT OR POWEROFF!

product page

http://www.ecs.com.tw/ECSWebSite/Product/Product_Detail.aspx?DetailID=873&am...

bios downloaded
http://download.ecsusa.com/dlfileecs/bios/mb/p4/GF8200A/78NAA512.zip