Did you backup the original BIOS ? What size is it ?
What size is the image that you tried to flash ?

Also, what is the EEPROM brand and part number ?

See also Any benefit to upgrading the BIOS on a Voodoo3?

EDIT: If you tried flashing a 64KB BIOS image into a 32KB EEPROM, it might explain what happened .

darry wrote on 2022-07-23, 04:52:

Did you backup the original BIOS ? What size is it ? What size is the image that you tried to flash ? […]
Show full quote

Did you backup the original BIOS ? What size is it ?
What size is the image that you tried to flash ?

Also, what is the EEPROM brand and part number ?

See also Any benefit to upgrading the BIOS on a Voodoo3?

EDIT: If you tried flashing a 64KB BIOS image into a 32KB EEPROM, it might explain what happened .

Yeah the original is backed up but I tried to blind flash it and it was a nogo. I will just have to install a PCI card and do it that way. I think maybe I might have an OEM Voodoo 3 (it came from Greece) so when I get the PCI card I'll go through the list of bio's until one of them works.

Success!!!

So I ordered an ATI Rage 128 XL from ebay (Cheapest PCI card I could find). Its an original chip on a new PCB made in China. Unfortunately the card only works on 3.3v PCI slots and my ASUS P2B slots are 5V. I knew this was probably going to be an issue once I did some research and a guy on Youtube made a video about this! He also explained how he added a 3.3v regulator to the card and *ding* it works in a 5V PCI slot with this modification. So I cannibalized a 3.3v regulator from a spare SD card to IDE adaptor I had laying around and would most likely never use.

Once this was done, It worked. I flashed the Voodoo 3 3000 with bios 21512SD.rom someone on this forum posted a few years ago and it worked great!

Its nice when things work out!

Sly_Botts wrote on 2022-08-05, 21:49:

Success!!! […]
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Success!!!

So I ordered an ATI Rage 128 XL from ebay (Cheapest PCI card I could find). Its an original chip on a new PCB made in China. Unfortunately the card only works on 3.3v PCI slots and my ASUS P2B slots are 5V. I knew this was probably going to be an issue once I did some research and a guy on Youtube made a video about this! He also explained how he added a 3.3v regulator to the card and *ding* it works in a 5V PCI slot with this modification. So I cannibalized a 3.3v regulator from a spare SD card to IDE adaptor I had laying around and would most likely never use.

Once this was done, It worked. I flashed the Voodoo 3 3000 with bios 21512SD.rom someone on this forum posted a few years ago and it worked great!

Its nice when things work out!

I am having the same issue you had but even with booting with an ATI PCI card it still refused to flash until I used the modified 2.15.07 file from another post, can you share the 21512SD.rom post that worked for you please?

cool

also, fyi, there's a nice project by Sphere which addresses this - Adding 3.3v to pci adapter(Released)

DonCatoli wrote on 2022-12-06, 23:01:

I am having the same issue you had but even with booting with an ATI PCI card it still refused to flash until I used the modified 2.15.07 file from another post, can you share the 21512SD.rom post that worked for you please?

https://drive.google.com/file/d/1DgPo2mrddr9R … iew?usp=sharing

Don't use the mod Rom. Just use 21512sd.rom

Sly_Botts wrote on 2022-12-25, 02:43:

DonCatoli wrote on 2022-12-06, 23:01:

I am having the same issue you had but even with booting with an ATI PCI card it still refused to flash until I used the modified 2.15.07 file from another post, can you share the 21512SD.rom post that worked for you please?

https://drive.google.com/file/d/1DgPo2mrddr9R … iew?usp=sharing

Don't use the mod Rom. Just use 21512sd.rom

Thank you

Sly_Botts wrote on 2022-12-25, 02:43:

DonCatoli wrote on 2022-12-06, 23:01:

I am having the same issue you had but even with booting with an ATI PCI card it still refused to flash until I used the modified 2.15.07 file from another post, can you share the 21512SD.rom post that worked for you please?

https://drive.google.com/file/d/1DgPo2mrddr9R … iew?usp=sharing

Don't use the mod Rom. Just use 21512sd.rom

Do you know the story of that mod, why do you recommend not using it?

vico wrote on 2024-04-17, 21:37:

Sly_Botts wrote on 2022-12-25, 02:43:

DonCatoli wrote on 2022-12-06, 23:01:

I am having the same issue you had but even with booting with an ATI PCI card it still refused to flash until I used the modified 2.15.07 file from another post, can you share the 21512SD.rom post that worked for you please?

https://drive.google.com/file/d/1DgPo2mrddr9R … iew?usp=sharing

Don't use the mod Rom. Just use 21512sd.rom

Do you know the story of that mod, why do you recommend not using it?

This video might have the answer i can't remember.

https://www.youtube.com/watch?v=H2rIfqd_-rg&l … iAjziwS&index=8

THANK YOU SOO MUCH FOR THIS INFORMATION AND ROM. i got a 3dfx voodoo 3000 agp (V1.001, SD RAM version) from lot of old pcs for 40$ (what a bargin!), that card thankfully works, no artifacts or any kind of errors. replaced the old capasitors, changed the thermal paste and add a fan to the heatsink. but wanted to update bios. i made the same mistakes you did, followed the basic instructions how to flash 3dfx voodoo 3000 agp with flash utility 2.14 and 21512sd.rom from the voodoo 3000 bios page. it gave me the exact Eeprom error and when tried to flash it back to save.rom and did nothing, then after a reboot no signal and the pc beeping no AGP error on me and bricked my card, but thankfully i had backup PCI card a generic "ATI Rage II" (pretty average card, but very useful for testing on old hardware) copied the proper rom (that you included) to a floppy to reflash the bios and it WORKED!!! on the next boot it was detected successfuly as bios V2.15.12. it was a huge sigh of relief for me, my card was also probably OEM like yours. i don't know why this rom is not included in the voodoo 3000 bios page.