also keep in mind that differnet manufacturers of Flash ICs have different procedures and processes to initialize/erase and reflash the memory area. So the flash erasure and reprogramming for one chip manuf wont exactly work on the other.

I had to deal with this with other hardware that used this technology.

You need an MXIC flash driver to reprog.

I dont know anything about the chipset that card has, but most chips require at least a preliminary bootloader on the flash that is written to allow the CPU to go into debug mode or programming mode. if that flash is blank, and the chipset has no debug or recovery ROM your kinda screwed... Only way around this, is if the chip has a backdoor style init process that can be activated to enter into prog and reflash the memory without the memory being present or programmed, such as JTAG.

or if the chip supports being directly manipulated by the PCI bus to get it into programming. But if any of this requires at least a low-level bootloader to be present in flash, your done...