GIGABYTE Radeon HD 6950 1 GB - I flashed wrong BIOS

Adys301CZ · Jul 16, 2013

I am from Czech Republic, sorry for mistakes

Hi. I have bought AMD Radeon HD 6950 1 GB. I tried to unlock shaders. So I downloaded this BIOS http://www.techpowerup.com/vgabios/94179/gigabyte-hd6950-1024-101220.html and edited it through RBE. I overclocked it to 900/1325 and unlocked shaders. I flashed it, POSTed succesfully. But when loading Windows 7 ( pulsing logo ) i get BSOD

So I tried to flash my original BIOS. But when I try to flash it( atiflash -unlockrom 0 + atiflash -p 0 -f CAYMAN.ROM, i get error - ROM not erased ! This never happened to me ... I don't know what to do ... :banghead:

Law-II · Jul 16, 2013

Hi

Welcome to TPU

Driver Removal Before Flashing at a Dos Prompt
Where AMD Catalyst Drivers uninstalled before flashing ? If No; will need to access windows safe mode [Press F8] when booting system; use third partie uninstaller ATI Man or Other; next: reboot to windows and re-install the latest driver from AMD or one that you know is stable and restart windows [*May clear the BSOD]

Uninstall and deap clean AMD vga drivers
download this DDU to clean out drivers, you can get that here:
Disable UAC (User Account Control) in windows control panel [this can be re-enabled at a later time]
install to C:\
Run Atiman Uninstaller.exe
Select: A
system will reboot
Select: C
application will end [reselect application window]
Select: Q

*If the BSOD still occurs; may need to reflash using the method below

Re-Flash
*Maybe the vbios that was flashed had write protect; will need to attach wire to vbios between Pin 8 & Pin 3 to enable write [vbios chip PM25LV010]
May need to remove the fansink/heatsink; attach a length of wire (use wire from an old 80pin ide cable; ensure this is firmly attached; solder or loop the wire; ensure it dose not have any area exposed to other components on the PCB) and then replace fansink before installing the vga card.
Example:

Pm25LV512-010.pdf
View attachment Pm25LV512-010.pdf

Next: copy latest version of atiflash here and backup of vbios image or original vbios image to a bootable flash drive

Next: boot to a dos prompt;
type atiflash -ai 0 [check the information/position of vga card]
If happy with position of card and no errors
Next:
type atiflash -p -f 0 [VbiosName.rom]

NB: Next time you are logged in to the forum goto User CP and fill in system specs; hardware; brandnames and OS

atb (all the best)

Law-II

Adys301CZ · Jul 16, 2013

Hi, thank you very much ! It works

I flashed original bios and everything is fine

Frick · Jul 16, 2013

Good thing we have users with an endless patiance here, like Law-II.

drdeathx · Jul 16, 2013

Why are you flashing????There is no reason to flash the bios

cheesy999 · Jul 16, 2013

drdeathx said:
Why are you flashing????There is no reason to flash the bios

Apart from extra shaders

System Name	H2o Box
Processor	Intel(R) Xeon e5-2690 v2 Stock 3.300 GHz stock
Motherboard	MSI X79A-G43 Plus (MS-7760) v3
Cooling	CPU EK & Phobya G-Changer 360 V2.0 RAD H2o VGA "AlphaCool M18" Hybrid [pump replaced 18/8/21]
Memory	G.Skill TridentX 16Gb 11-12-12-32 2T @ 1866Mhz [locked]
Video Card(s)	Zotac GTX 1080ti AMP EXTREME
Storage	HyperX Fury 120GB & Savage 480GB SSD, Seagate 250GB,250GB 7200rpm Kingston 64GB SSD
Display(s)	Asus TUF Gaming VG32VQR 2560*1440 165Hz VA Panel
Case	Corsair O-800D
Audio Device(s)	Creative Sound Blaster X-Fi Titanium Fatal1ty Pro
Power Supply	Be Quiet! [Dark Power Pro 11] 1200W CM replaced [7-4-2017]
Mouse	Zelotes T-90
Keyboard	K66 Mechanical US Layout
Software	Win 10 Pro 64Bit v 20H2 / OS [build 19043.1237] WFEP 120.2212.3530.0

System Name	Black MC in Tokyo
Processor	Ryzen 5 5600
Motherboard	Asrock B450M-HDV
Cooling	Be Quiet! Pure Rock 2
Memory	2 x 16GB Kingston Fury 3400mhz
Video Card(s)	XFX 6950XT Speedster MERC 319
Storage	Kingston A400 240GB \| WD Black SN750 2TB \|WD Blue 1TB x 2 \| Toshiba P300 2TB \| Seagate Expansion 8TB
Display(s)	Samsung U32J590U 4K + BenQ GL2450HT 1080p
Case	Fractal Design Define R4
Audio Device(s)	Line6 UX1 + some headphones, Nektar SE61 keyboard
Power Supply	Corsair RM850x v3
Mouse	Logitech G602
Keyboard	Cherry MX Board 1.0 TKL Brown
VR HMD	Acer Mixed Reality Headset
Software	Windows 10 Pro
Benchmark Scores	Rimworld 4K ready!

System Name	Halloween Boo!
Processor	Intel Core i7 3770K
Motherboard	Gigabyte Z77-Up7
Cooling	Custom Water/ Thermalchill TA 120.3/ Swiftech Apogeee XT/ MCP655/ Swiftech M icrores/ XSPC RX 240
Memory	16G G.Skill trident 2400MHz
Video Card(s)	3 x Radeon 7970
Storage	OCZ Revo Drive 240G
Display(s)	24 inch Viewsonic
Case	Phobia WayCoolIt Test Bench
Power Supply	Nexus 1100 watt

System Name	PC
Processor	AMD Ryzen 3600
Motherboard	MSI B450 Mortar Max
Cooling	Phanteks PH-TC12DX, 3 x NZXT FN 140mm, 1x NZXT FV V2 120mm
Memory	32gb DDR4 3200mhz
Video Card(s)	ASUS R9 290 DCII-OC 4GB
Storage	corsair mp600 1TB
Display(s)	LG 27MB85Z 27" 1440p
Case	NZXT Source 340
Power Supply	Thermaltake 675w
Mouse	Logitech G500S
Keyboard	Logitech G510S
Software	Windows 8.1 64 bit

GIGABYTE Radeon HD 6950 1 GB - I flashed wrong BIOS

Adys301CZ

New Member

Law-II

Adys301CZ

New Member

Frick

Fishfaced Nincompoop

drdeathx

cheesy999