Need Help to EFI Flash a Radeon HD 6870

Washac

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Jul 2, 2006
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Just in case I decide to EFI flash my new video card can anybody point me in the direction of a guide for complete noobs, I have a rough idea of what is required ?

I have Cindoris Zeus app.
The card to flash would be a - XFX Radeon HD 6870, HD-687A-ZDFC
 
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Washac

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Jul 2, 2006
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Very surprised nobody can help out with this so far :(
 

Inconsequential

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Sep 12, 2007
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Look on netkas' forums, the way I did it involved doing it using terminal, none of the apps worked for me.

Also you need to flash in windows, mainly because OS X flashes didn't work either. This was 6+ months ago tho, so things might have changed.
 

Washac

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Original poster
Jul 2, 2006
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Thanks, I knew somebody would come up with the goods, I hope this is not too complicated.

So after installing the 6870 I can use Romecreator and then flash Zeus and jobs done, I assume that is correct ?
 
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darkcoupon

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Aug 8, 2012
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Thanks, I knew somebody would come up with the goods, I hope this is not too complicated.

So after installing the 6870 I can use Romecreator and then flash Zeus and jobs done, I assume that is correct ?
Theoretically, yes. Also, once flashed, the XFX 6870 only shows the apple boot screen in the lower DVI port, I believe, so if you're only using one of the other ports it might not be worth it.
 

Washac

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Jul 2, 2006
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Theoretically, yes. Also, once flashed, the XFX 6870 only shows the apple boot screen in the lower DVI port, I believe, so if you're only using one of the other ports it might not be worth it.
OK, thanks for that bit of information :)
 

Phrygian

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Nov 26, 2011
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i believe zeus is outdated and you should use freya instead... found at groths.org

but frankly... there is no reason to flash a 6870... if you go to grorths you will also find a fix for the few issues that remain with the 6870 (steam and dvd player fixes etc). All you will get is a boot screen... and who needs a boot screen really? In there very few instances i do need a boot screen... i throw my old card back in... which has yet to happen since upgrading.
 

bax2003

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Dec 25, 2011
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Serbia
Helps in what way, my Mac Pro is a 2009 4,1
Flashing 6870 with 64-bit EFI does not mean anything for 32-bit EFI machines like MP 2006/2007. MP 3.1+ (Early 2008) have 64-bit EFI and they colud read 64-bit EFI from Radeon.