How to edit any AMD Radeon RX580 2048SP VBios to run on macOS

[MaLd0n]

How to edit and properly patch any AMD Radeon RX 580 2048SP VBIOS for full compatibility with macOS. This guide explains the key differences between standard RX 580 and 2048SP variants, how to modify device IDs, correct memory straps, and ensure proper initialization without kernel panics or black screens. Ideal for Hackintosh users seeking native-like performance, GPU acceleration, and stability across modern macOS versions using OpenCore or Clover.

 

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Disclaimer: Flashing your GPU BIOS carries risks. Do this at your own responsibility. 

This process is specific to making the RX580SP work on macOS. The GPU may not function properly on Windows after that.

The best aproach to the correct port configuration, memory timings, etc.

Avoid using VBIOS from other card. It's a shot in the dark. All the GPUs I tested work nice with that.

 

1- Save VBios with GPU-Z. Download HERE. Back Up this file.

 

2- Download Super Hex Editor on Microsoft Store. You can use your preferred hex editor.

 

3- Open Hex Editor then load saved .rom.

 

4- Go to Menu Edit / Find and replace.

 

5- Let's start conversion RX580 as RX570.

RX580 2048SP use F0 FD E6 0F and we need change to RX570 F0 7D E6 0F.

Use Find: F0 FD E6 0F and Replace: F0 7D E6 0F and Search all entries.

 

Replace all.

 

After that you can confirm changes.

 

6- Now let's change Device id. Use Clear option.

 

RX580 2048SP use 02 10 DF 6F and we need change to 02 10 DF 67.

Use Find: 02 10 DF 6F and Replace: 02 10 DF 67 and Search all entries.

 

Replace all and confirm changes.

 

Save the edited rom as Ellesmere01.rom.

 

7- Now let's fix the Invalid Checksun. Download Polaris Bios Editor HERE

Open this app then load edited rom.

 

Confirm OK then Save as. Save as Ellesmere02.rom.

 

8- Le'ts flash edited rom.

Download AMDVBFlash Version 2.93 HERE or atiflash_293.zip, extract and copy edited rom to this folder.

 

Run amdvbflashWin / If need disable some security things.
Use this address on web browser to access this. windowsdefender://coreisolation/

 

Run CMD as Admin.

 

Use cd to access atiflash_293 folder.

 

Run command bellow to unlock rom.

Quote

amdvbflash.exe -unlockrom 0

 

Start flash edited rom with command bellow.

Quote

amdvbflash.exe -p 0 -f Ellesmere02.rom

 

Restart PC after finish.

 

Confirm with GPU-Z.

 

Results on macOS.

Credits: TechPowerUp, philipxyc, IndeedMiners, hellm, BlackCH, Tech With Shagar

[blackpanthernit]

Thank you so much for this tutorial. 🤩

[MaLd0n]

Enjoy!