gpu-bios/README.md

GPU BIOS Collection

A collection of GPU BIOS ROM files and tools for extracting/flashing them.

Extracting GPU BIOS on Linux (AMD)

Prerequisites

• Root/sudo access
• amdvbflash (included in bin/)

Steps

1. Identify your GPU adapter index:

   sudo ./bin/amdvbflash -i
   

   This lists all detected AMD GPUs with their adapter numbers (e.g., 0, 1, etc.).

2. Extract (save) the BIOS to a ROM file:

   sudo ./bin/amdvbflash -s 0 output.rom
   

   Replace 0 with your adapter number from step 1, and output.rom with your desired filename.

3. Verify the saved file:

   ls -la output.rom
   

   A valid ROM file is typically 256KB-512KB for most AMD GPUs.

Notes

• amdvbflash must be run as root (sudo).
• The tool supports AMD Radeon GPUs. For NVIDIA GPUs, use nvflash instead.
• Always save a backup of your stock BIOS before flashing any modifications.
• The included amdvbflash binary is v4.71 for Linux x86_64.

Quick Reference

Command	Description
sudo ./bin/amdvbflash -i	List detected AMD GPUs
sudo ./bin/amdvbflash -s <adapter> <file.rom>	Save BIOS to file
sudo ./bin/amdvbflash -p <adapter> <file.rom>	Flash BIOS from file

Files

• bin/amdvbflash - AMD VBIOS flash tool v4.71 (Linux), downloaded from TechPowerUp
• amd-rx5600xt.rom - AMD RX 5600 XT BIOS dump