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BIOS for MSI MS-6741

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First post, by zago27

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Hello there!
It's probably a bit newer than usual for this forum, but I have an MSI MS-6741 motherboard for mPGA754 K8 CPUs which is giving me a bit of an headache with its BIOS flash ROM. The problem is very simple: the ROM chip seems to be 2 Mbit in size, but all the files I found on the Internet are for 4 Mbit chips.
The board is working just fine as is, but I have a Sempron CPU to try, but it needs a BIOS update to properly detect it. Plus, this particular unit has the BIOS chip soldered to the board instead of the standard PLCC32 socketed version, so I can't just replace it.
Does anybody know where can I find the 2 Mbit BIOS for this board?

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Reply 1 of 6, by Roman555

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Hi,

Maybe there're different hardware versions of the mainboard. Try to upload here photos of top and bottom side of the mainboard. On the bottom side usually there's a sticker with the correct model.

[ MS6168/PII-350/YMF754/98SE ]
[ 775i65G/E5500/9800Pro/Vortex2/ME ]

Reply 2 of 6, by zago27

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It's Rev 1 board. Everything seems to match the specs on the MSI manual, but the ROM apparently does not.
Here are some pics

20200617_162242_compress77.jpg
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Overall view
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Public domain
20200617_162249.jpg
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20200617_162249.jpg
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610.46 KiB
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663 views
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ROM chip close-up
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Public domain
20200617_162308.jpg
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20200617_162308.jpg
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1.15 MiB
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663 views
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Product/Serial number
File license
Public domain

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Reply 3 of 6, by Roman555

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zago27 wrote on 2020-06-17, 14:39:

It's Rev 1 board. Everything seems to match the specs on the MSI manual, but the ROM apparently does not.

I think it's MSI K8TM-ILSR. Does your mainboard have integrated graphics?
https://www.msi.com/Motherboard/support/K8TMILSR

[ MS6168/PII-350/YMF754/98SE ]
[ 775i65G/E5500/9800Pro/Vortex2/ME ]

Reply 5 of 6, by Roman555

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zago27 wrote on 2020-06-17, 17:57:

No, the spot for the VGA connector is not populated

So yes, those BIOS 4mbit you have downloaded I suppose for a mainboard with integrated graphics K8MM-ILSR

P.S. As I said the model's name is on the sticker 😀

[ MS6168/PII-350/YMF754/98SE ]
[ 775i65G/E5500/9800Pro/Vortex2/ME ]

Reply 6 of 6, by zago27

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Oh. I just supposed the MS number was different between the two, but apparently I was wrong. Thanks a lot!

Your friendly neighborhood hardware database and blog, The Retro Web

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