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当前版本: Allen ,

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I used one of the Dell / Alienware 2GB cards. These can still be got for under $200 on eBay. The Apple card is identical in every way except for the firmware.
 
This is the Dell / Alienware card here
 
[image|1435803]
 
[image|1435806]
 
Grab the Apple ROM file from here: https://www.techpowerup.com/vgabios/?architecture=&manufacturer=Apple&model=&interface=&memType=&memSize=&since= Pay attention to the VRAM size and get the correct file
 
OnPrepare the card by removing the Dell metal bracket that the heatsink screws into on the back of the card. You will need to transfer the bracket from the Apple card. Transfer anything else that might be needed.

On
the card, with the MXM connector facing downwards and the ATI chip facing you. There are 2 small black chips to the top left of the ATI chip. (one above the other) You need to flash the top one as shown
OnPrepare the card by removing the Dell metal bracket that the heatsink screws into on the back of the card. You will need to transfer the bracket from the Apple card. Transfer anything else that might be needed.

On
the card, with the MXM connector facing downwards and the ATI chip facing you. There are 2 small black chips to the top left of the ATI chip. (one above the other) You need to flash the top one as shown
 
[image|1435801]
 
You will need a way to interface with the chip on the card. I used a Raspberry Pi with a SOIC 8 clip.
 
Install Flashrom on the rPi. Google is your friendUse the guide here.

https://tomvanveen.eu/flashing-bios-chip-raspberry-pi/
Install Flashrom on the rPi. Google is your friendUse the guide here.

https://tomvanveen.eu/flashing-bios-chip-raspberry-pi/
 
Connect the rPi, the clip and plug it in. I have my Pi setup as an access point with its own Wifi network. This way, It is portable and can be run of a power bank
 
scp the file onto the pi. "scp filename pi@ipaddress:/home/pi"
 
Backup the existing ROM first,
 
Flash the card and the card works perfectly as a genuine Apple card. I flashed the 1GB VBIOS version first before realising that I had the 2 GB card and had to dismantle the iMac again to reflash the card with the correct ROM. (I repeat, CHECK YOU HAVE THE CORRECT FILE)
 
[image|1435802]
 
After flashing the correct file it should look like this
 
[image|1435826]
 
You will get proper boot screen. No Kext hacking etc. The card works with full acceleration and passes Apple Service Diagnostics
 
[image|1435825]
 
[image|1435804]
 
Good luck and save yourselves a few quid.

状态:

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编辑: Allen ,

文本:

I used one of the Dell / Alienware 2GB cards. These can still be got for under $200 on eBay. The Apple card is identical in every way except for the firmware.
I used one of the Dell / Alienware 2GB cards. These can still be got for under $200 on eBay. The Apple card is identical in every way except for the firmware.
 
This is the Dell / Alienware card here
 
[image|1435803] [image|1435806]
[image|1435803] [image|1435806]
 
Grab the Apple ROM file from here: https://www.techpowerup.com/vgabios/?architecture=&manufacturer=Apple&model=&interface=&memType=&memSize=&since= Pay attention to the VRAM size and get the correct file [image|1435806]
Grab the Apple ROM file from here: https://www.techpowerup.com/vgabios/?architecture=&manufacturer=Apple&model=&interface=&memType=&memSize=&since= Pay attention to the VRAM size and get the correct file [image|1435806]
 
OnGrab the Apple ROM file from here: https://www.techpowerup.com/vgabios/?architecture=&manufacturer=Apple&model=&interface=&memType=&memSize=&since= Pay attention to the VRAM size and get the correct file

On
the card, with the connector facing downwards and the ATI chip facing you. There are 2 small black chips to the top left of the ATI chip. (one above the other) You need to flash the top one as shown
OnGrab the Apple ROM file from here: https://www.techpowerup.com/vgabios/?architecture=&manufacturer=Apple&model=&interface=&memType=&memSize=&since= Pay attention to the VRAM size and get the correct file

On
the card, with the connector facing downwards and the ATI chip facing you. There are 2 small black chips to the top left of the ATI chip. (one above the other) You need to flash the top one as shown
 
[image|1435801]
 
You will need a way to interface with the chip on the card. I used a Raspberry Pi with a SOIC 8 clip.
 
Install Flashrom on the rPi. Google is your friend here.
 
Connect the rPi, the clip and plug it in. I have my Pi setup as an access point with its own Wifi network. This way, It is portable and can be run of a power bank
 
scp the file onto the pi. "scp filename pi@ipaddress:/home/pi"
 
Backup the existing ROM first,
 
Flash the card and the card works perfectly as a genuine Apple card. I flashed the 1GB VBIOS version first before realising that I had the 2 GB card and had to dismantle the iMac again to reflash the card with the correct ROM. (I repeat, CHECK YOU HAVE THE CORRECT FILE) [image|1435802

[image|1435802]

After flashing the correct file it should look like this

[image|1435826
]
Flash the card and the card works perfectly as a genuine Apple card. I flashed the 1GB VBIOS version first before realising that I had the 2 GB card and had to dismantle the iMac again to reflash the card with the correct ROM. (I repeat, CHECK YOU HAVE THE CORRECT FILE) [image|1435802

[image|1435802]

After flashing the correct file it should look like this

[image|1435826
]
 
You will get proper boot screen. No Kext hacking etc. The card works with full acceleration and passes Apple Service Diagnostics
 
[image|1435825]
[image|1435804]
 
Good luck and save yourselves a few quid.

状态:

open

编辑: Allen ,

文本:

I used one of the Dell / Alienware 2GB cards. These can still be got for under $200 on eBay. The Apple card is identical in every way except for the firmware.
I used one of the Dell / Alienware 2GB cards. These can still be got for under $200 on eBay. The Apple card is identical in every way except for the firmware.
 
GrabThis is the Apple ROM file from here: https://www.techpowerup.com/vgabios/?architecture=&manufacturer=Apple&model=&interface=&memType=&memSize=&since= Pay attention to the VRAM size and get the correct fileDell / Alienware card here
GrabThis is the Apple ROM file from here: https://www.techpowerup.com/vgabios/?architecture=&manufacturer=Apple&model=&interface=&memType=&memSize=&since= Pay attention to the VRAM size and get the correct fileDell / Alienware card here
 
On[image|1435803] [image|1435806]

Grab the Apple ROM file from here: https://www.techpowerup.com/vgabios/?architecture=&manufacturer=Apple&model=&interface=&memType=&memSize=&since= Pay attention to the VRAM size and get the correct file

On
the card, with the connector facing downwards and the ATI chip facing you. There are 2 small black chips to the top left of the ATI chip. (one above the other) You need to flash the top one.one as shown

[image|1435801]
On[image|1435803] [image|1435806]

Grab the Apple ROM file from here: https://www.techpowerup.com/vgabios/?architecture=&manufacturer=Apple&model=&interface=&memType=&memSize=&since= Pay attention to the VRAM size and get the correct file

On
the card, with the connector facing downwards and the ATI chip facing you. There are 2 small black chips to the top left of the ATI chip. (one above the other) You need to flash the top one.one as shown

[image|1435801]
 
You will need a way to interface with the chip on the card. I used a Raspberry Pi with a SOIC 8 clip.
 
Install Flashrom on the rPi. Google is your friend here.
 
Connect the rPi, the clip and plug it inin. I have my Pi setup as an access point with its own Wifi network. This way, It is portable and can be run of a power bank

scp the file onto the pi. "scp filename pi@ipaddress:/home/pi"

Backup the existing ROM first,

Flash the card and the card works perfectly as a genuine Apple card. I flashed the 1GB VBIOS version first before realising that I had the 2 GB card and had to dismantle the iMac again to reflash the card with the correct ROM. (I repeat, CHECK YOU HAVE THE CORRECT FILE) [image|1435802]

You will get proper boot screen. No Kext hacking etc. The card works with full acceleration and passes Apple Service Diagnostics
Connect the rPi, the clip and plug it inin. I have my Pi setup as an access point with its own Wifi network. This way, It is portable and can be run of a power bank

scp the file onto the pi. "scp filename pi@ipaddress:/home/pi"

Backup the existing ROM first,

Flash the card and the card works perfectly as a genuine Apple card. I flashed the 1GB VBIOS version first before realising that I had the 2 GB card and had to dismantle the iMac again to reflash the card with the correct ROM. (I repeat, CHECK YOU HAVE THE CORRECT FILE) [image|1435802]

You will get proper boot screen. No Kext hacking etc. The card works with full acceleration and passes Apple Service Diagnostics
 
scp the file onto the pi.[image|1435804]
scp the file onto the pi.[image|1435804]
 
Backup the existing ROM first, Flash the cardGood luck and the card works perfectly assave yourselves a genuine Apple cardfew quid.
Backup the existing ROM first, Flash the cardGood luck and the card works perfectly assave yourselves a genuine Apple cardfew quid.

状态:

open

编辑: Allen ,

文本:

I used one of the Dell / Alienware 2GB cards. These can still be got for under $200 on eBay. The Apple card is identical in every way except for the firmware.
I used one of the Dell / Alienware 2GB cards. These can still be got for under $200 on eBay. The Apple card is identical in every way except for the firmware.
 
Grab the Apple ROM file from here: https://www.techpowerup.com/vgabios/?architecture=&manufacturer=Apple&model=&interface=&memType=&memSize=&since= Pay attention to the VRAM size and get the correct file
Grab the Apple ROM file from here: https://www.techpowerup.com/vgabios/?architecture=&manufacturer=Apple&model=&interface=&memType=&memSize=&since= Pay attention to the VRAM size and get the correct file
 
YouOn the card, with the connector facing downwards and the ATI chip facing you. There are 2 small black chips to the top left of the ATI chip. (one above the other) You need to flash the top one.

You
will need a way to interface with the ROM chip chip on the card. I used a Raspberry Pi with a SOIC 8 clip.
YouOn the card, with the connector facing downwards and the ATI chip facing you. There are 2 small black chips to the top left of the ATI chip. (one above the other) You need to flash the top one.

You
will need a way to interface with the ROM chip chip on the card. I used a Raspberry Pi with a SOIC 8 clip.
 
Install Flashrom on the rPi. Google is your friend here.
 
Connect the rPi, the clip and plug it in
 
scp the file onto the pi.
 
Backup the existing ROM first, Flash the card and the card works perfectly as a genuine Apple card

状态:

open

原帖由: Allen ,

文本:

I used one of the Dell / Alienware 2GB cards. The Apple card is identical except for the firmware.

Grab the Apple ROM file from here: https://www.techpowerup.com/vgabios/?architecture=&manufacturer=Apple&model=&interface=&memType=&memSize=&since=

You will need a way to interface with the ROM chip on the card. I used a Raspberry Pi with a SOIC 8 clip.

Install Flashrom on the rPi. Google is your friend here.

Backup the existing ROM first, Flash the card and the card works perfectly as a genuine Apple card

状态:

open