Edit Bios AMD R9 290X

I have to modify the Bios of a Powercolor R9 290X, in particular by reducing the frequency of the memories. I have some questions:

1) Is it possible to download from the web the bios of this card (same brand and model precisely) and modify it or do I need to download the bios present on my VGA?

2) What is the easiest way to make this change? Is there a utility like for previous AMD models?

3) What can I use to flash the bios from dos?

Quick short answer, assuming you know your way around, are comfortable with, and know the potential destructive consequences from BIOS modifications:


1) It is possible, however it may not be necessary. You may use GPU-Z to dump your BIOS into a file, and then modify it (I strongly recommend modifying a copy of the BIOS in case it goes south).

2) I used Hawaii BIOS Reader on my 290s.

3) FWIW, I used ATIWinFlash to flash it from under Windows. If you want a DOS-flashing utility, ATIFlash works too. I've used it a lot.

This thread has a plethora of information.

Do let me know if you need further advise or information.

Thanks for the reply. I think my vga is faulty (tryed on 2 monitor e 2 different pc, linux and windows). Black screen (monitor in stand-by) after 10 second from OS boot (but the pc continue to work). The vga work only in the Mainboard Bios screen. Artifact on screen.
So, I want to try to decrase frequency on the VRAM.
I can't download the bios from my VGA (not possible in 10 second of operating system), so i want to download a bios and edit it, and i need to flash in dos.