flash bios

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    flashing the 3870 bios.

    I need help flashing the 3870 bios.I have already pencil modded the gpu.I have 1.4 volts on the nose.but in order to take advantage of the extra voltage,the bios of the card has to be flashed.I loaded up ATI WINFLASH and the modded bios,but I get a subsystem ID mismatch??? I have tryed shutting...