Flashing HD7850 pitcairn help needed

[MacNiceGadgets]

Hi all!

Could anyone here advise me how to modify HD7950's hamachi framebuffers to Futomaki framebuffers after using netkas' bundle script. Without modifying its framebuffers to Futomaki, my mac pro stars up with apple boot screen and the display goes black right before the desktop comes up.
Your help would be highly appreciated. Thanks a lot in advance!

 

[h9826790]

Hi all!

Could anyone here advise me how to modify HD7950's hamachi framebuffers to Futomaki framebuffers after using netkas' bundle script. Without modifying its framebuffers to Futomaki, my mac pro stars up with apple boot screen and the display goes black right before the desktop comes up.
Your help would be highly appreciated. Thanks a lot in advance!

Impossible, you better flash the original firmware back in, and forget about the boot screen.

 

[mrnobody]

"Subject: HD7850" yet you ask "how to modify HD7950's".
Which is it? I would guess the 'flashability" highly depends on the card's brand also.

Don't know who flashed it, but this is from my System Information:
AMD Radeon HD 7850:
Name: ATY,Futomaki
Type: Display Controller
Driver Installed: Yes
MSI: Yes
Bus: PCI
Slot: Slot-1
Vendor ID: 0x1002
Device ID: 0x6819
Subsystem Vendor ID: 0x1458
Subsystem ID: 0x2553
Revision ID: 0x0000
Link Width: x16
Link Speed: 2.5 GT/s

Running two displays from the mDP ports, no issues with boot screen, etc.
Card is a Gigabyte Windforce 2GB like this one:

 

[MacNiceGadgets]

"Subject: HD7850" yet you ask "how to modify HD7950's".
Which is it? I would guess the 'flashability" highly depends on the card's brand also.

Don't know who flashed it, but this is from my System Information:
AMD Radeon HD 7850:
Name: ATY,Futomaki
Type: Display Controller
Driver Installed: Yes
MSI: Yes
Bus: PCI
Slot: Slot-1
Vendor ID: 0x1002
Device ID: 0x6819
Subsystem Vendor ID: 0x1458
Subsystem ID: 0x2553
Revision ID: 0x0000
Link Width: x16
Link Speed: 2.5 GT/s

Running two displays from the mDP ports, no issues with boot screen, etc.
Card is a Gigabyte Windforce 2GB like this one:

Thanks for your reply. Yes, I meant like you mentioned; modifying my hd7850 rom using hd7950’s script. My hd7850 is Sapphire’s 2gb model, but could you possibly share with your rom so that I can study which part of rom I need to replace from hamachi to futomaki with. Thanks again.