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Versión actual por: Allen ,

Texto:

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
 
Prepare 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. Use the guide here.
Install Flashrom on the rPi. Use 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.
 
 
 
Note, As this guide is now over 3 years old, time has marched on and not been kind to our 2009-2011 iMacs, The main issue we are all facing is the lack of Metal support with the AMD cards (If they haven’t failed already) As most of you are probably all aware, there are some great developers on the scene that have devoted a lot of time into keeping our old unsupported Macs on the road. Special credits must do to DosDude who created the Mojave and Catalina Patcher tools to allow people to run these operating systems on their older unsupported Macs.
 
Unfortunalty with these iMacs, It can be done but requires a more up to date graphics card. There are 2 cards that I have found which offer boot screen and Metal support. There is a size “B” card for the 27” iMacs and a size “A” card for the 21.5” Macs. The size “A” will work in both.
 
These of course need to be flashed before they will work correctly. If there is enough demand for this I may setup a store to sell pre flashed MXM cards for these systems. A guide will also be provided for those that wish to flash the cards themselves. I will edit the original post to bring it into the 20’s

Estatus:

open

Editado por: Allen ,

Texto:

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.

Estatus:

open

Editado por: Allen ,

Texto:

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.

Estatus:

open

Editado por: Allen ,

Texto:

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.

Estatus:

open

Editado por: Allen ,

Texto:

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

Estatus:

open

Aporte original por: Allen ,

Texto:

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

Estatus:

open