BIOS Updates forum

Is it possible to hotflash this chip in a motherboard that only supports 256kb? I have one that rekognice the chip but I can't program it successfully with uniflash 1.32. I read in another topic that someone had done it with an AM29F040 wich i suppose is the same chip. He was talking about some switch on the A18/VPP pin. Can someone explain me what to do if this is possible? Is it any motherboards that can program/hotflash this chip to day. (I also have a Epox PEA+ motherboard and I have access to a couple of others).
Or is the last solution to buy a flasher to get it programmed.

Find a board that supports 512kb flash chips.

Can I use the Epox PEA+, it have a 512kb flashrom but its 3,3V?

BTW,
thank you all for the help at this forum, I have learned a lot of eprom and flashroms.