MCUmall EPROM BIOS Chip Burner Forum - Reflashing a dead BIOS chip

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Reflashing a dead BIOS chip

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tim23x

United Kingdom
1 Posts

Posted - 02/15/2009 : 06:58:07

Hello,

Sorry for the basic question, I've managed to wipe the AMI BIOS of my Asrock P45R2000-wifi and would like to reflash it. I have a PIC programmer (PICSTART Plus, from Microchip), the BIOS chip is a Winbond 25X80VAIZ. Can I use this kit to do it and is there a FAQ on how to burn a BIOS chip anywhere? I don't know if I have to make any mods to the BIOS file which I've downloaded from the Asrock website, also I'm not sure if I start writing from memory loc 0 or have to start elsewhere. Is there a protected area? Can I just use the Microchip software to burn the chip?

Thanks in advance for your help.

Tim

Reply #1

ZLM

2937 Posts

Posted - 02/15/2009 : 16:30:10

The PICStart Plus only supports PIC chips, not the BIOS chips.

To program your 25X80 BIOS chip, you can either select GQ-3X(slower) or GQ-4X(faster).
See:
http://www.mcumall.com/comersus/store/comersus_viewItem.asp?idProduct=4225

OR

http://www.mcumall.com/comersus/store/comersus_viewItem.asp?idProduct=4282

If your chip is soldered on the PCB and it has a SPI header, then you can use a jump wire to program the chip. It your mother board does not have a SPI header, then you may need to take off the chip and program it on the programmer ZIF socket directly.

see:
http://www.mcumall.com/forum/topic.asp?TOPIC_ID=1438&SearchTerms=motherboard

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