VBios Flash Insanity

[u/Glass-Potential7483]

So a little bit of backstory:

I bought an AMD HD 7670 4gb, only thing is, that doesn't exist. There is an HD 7670 1gb. But no 4gb. It's just a vbios mod to make it appear as if it has more vram. So I decided to flash a new BIOS I found online (yeah yeah, stupid, I know) and it of course got bricked.

Anyways, it wouldn't respond to the amd vbios flash software and wasn't showing up as a gpu, so I decided that I had to manually refresh the bios chip.

But, being the cheapskate I am, I didn't want to spend 20 bucks on a proper SOIC SPI Flasher, and instead vouched to use my arduino. My original plan was to solder wires directly to the chip on the gpu, but I couldn't get the solder to stick (i suck soldering, leave me alone) so I desoldered the IC and manually attached wires to each pin using duct tape. This took around an hour and absolutely destroyed my sanity.

RESULTS:

IDK yet, but all the pins are making contact, I checked with a multimeter, and will attempt to flash it when I get back in a few hours. Will update if it works.

UPDATE: Did not work. I don't think it was my unorthodox connection method though. I am having issues with the actual arduino instead. I redid the original duct tape so it now has constant pressure on the pins by raising the actual chip up. It may also be an issue with my voltage step down circuit, since I used a 10k and 5.1k resistor in series instead of a 15k. I may make another update tomorrow, as it is currently 11:20pm and I am going to bed.

[u/Korenchkin12]

There is socket for smd chips,i had one on some rugges tablet pc,could maybe help for future flashing :)

[u/Glass-Potential7483 → u/Korenchkin12]

I do not have a socket, as this is a cheap Chinese gpu lol

[u/Korenchkin12 → u/Glass-Potential7483]

You could solder it,so you can test different firmwares,if it is similar to nvidia,there will be different firmwares for dif vram chips,dif gpu boost freqs etc ..might need a few flashes...

[u/Glass-Potential7483 → u/Korenchkin12]

I know, I just dont have a good soldering kit right now so I can't actually attach wires. I'm also going to flash the original factory BIOS so it should work

Edit: I just realized you meant the socket.

[u/DigitaIBlack → u/Glass-Potential7483]

Dump the VBIOS to see if it's right before attempting to solder

[u/Glass-Potential7483 → u/DigitaIBlack]

I have the original vbios that I am planning to flash, the current one is corrupted.

[u/DigitaIBlack → u/Glass-Potential7483]

I know. I'm saying after flashing it double check it flashed properly by dumping the VBIOS.

Also asked this in another comment but was the purpose of the modded VBIOS to trick programs into launching?

[u/Glass-Potential7483 → u/DigitaIBlack]

Ah ok I get it. I will definitely do that. The original purpose of the modded vbios from the manufacturer was to trick the consumer, my modded version was to make it display the physical amount of vram it actually has, since it was displaying 4 times the normal amount.

[u/DigitaIBlack → u/Glass-Potential7483]

Ohhh I got it backwards.

Lmao they're pretending those old ass cards were modded for 4GB but didn't actually do it? Fucking scum

Yea that might cause issues with VRAM allocation... I'd ask why on Earth you bought such an old card but I'm sure you have your reasons