check to see if flashrom with enable buspirate setting works.. or even old LAN card with socket.. 512k max filesize. or hotswap method (Boot to dos and swap bios chip then run the flashtool) in another mainboard with plcc32 socket and the awdflash with special switch to ignore part (mobo and chip) to force it
Last method is interesting. Can you tell me the necessary switches to override mismatching? Perhaps i'll find a mobo..... Can it repair also a corrupted bootblock? Or do a reflash of the complete content of the eeprom?