820-2915 No-GPU Dump?

[javier_herart]

Hello.

Is there a way to disable the GPU by reflashing the bios? I know and I do the dosdude method...
I just want the DUMP to test the computer to see if there is other problem.

If available, could provide the bin?

thanks

 

[2informaticos]

820-2915 21.06 no GPU OK.rar

drive.google.com

Try and comment.
Don't forget to remove R8904/11 first.

I personally remove all I can from the 3 GPU power supplies, when I disable GPU.
And many 10u/6.3-10V (0603) filter caps underneath GPU too.
Don't do it, until confirm BIOS mod works.

 

[javier_herart]

Thanks
It is working BUT I cannot boot from my HDD/SSD, I see the folder and I can boot from usb OS installer but it wont boot from the SSD not even connected via USB.
When connected inside the mac I can see the SSD on the Disk Utility of the USB installer.
Could be the Bios?

 

[javier_herart]

Both Hdd and ssd have known good installation of high sierra

 

[2informaticos]

I think the BIOS sent to you doesn't have APFS support.
Take an empty (internal) HDD/SSD and make a fresh install of High Sierra; this will upgrade BIOS to APFS support.
Then put back original HDD.

BTW, not sure if ME region is clean.
We have videos on the forum, about how to clean ME and properly change SSN (fix Fsys checksum required).