nvflash (nvidia vbios flash tool)

[cyclone]

Title: nvflash how-to guide
Author: techpowerup.com (nvflash)
URL: https://www.techpowerup.com/download/nvidia-nvflash/
Author: @cyclone (how-to)
URL: https://github.com/cyclone-github/nvidia_vbios/
Description: NVIDIA NVFlash is used to flash the graphics card BIOS on Blackwell, Ada, Ampere, Turing, Pascal and all older NVIDIA cards.

GeForce RTX 5090, RTX 5080, RTX 5070 Ti, RTX 5070, RTX 5060 Ti, RTX 5060
GeForce RTX 4090, RTX 4080, RTX 4070, RTX 4060 Ti, RTX 4060, Super, too.
GeForce RTX 3090, RTX 3080, RTX 3070, RTX 3060 Ti, RTX 3060, Super, too.
GeForce RTX 2080 Ti, RTX 2080, RTX 2070, RTX 2060, GTX 1660, GTX 1650
and many more, including BIOS flashing on older NVIDIA GPUs.

how-to guide:
https://github.com/cyclone-github/nvidia_vbios/

# by cyclone
# https://github.com/cyclone-github/nvidia_vbios/
# instructions for flashing nvidia vbios with nvflash on linux
# tested on debian 11, 12, 13
# updated: 2025-11-11
# must run as root

1. First, make sure latest nvflash is installed and working
https://www.techpowerup.com/download/nvidia-nvflash/
extract zip file and confirm nvflash detects gpu:
./nvflash --list

2. Unload nvidia processes
rmmod nvidia_drm nvidia_modeset nvidia_uvm nvidia

3. Back gpu rom
./nvflash --save vbios_backup.rom

4. Unprotect gpu
./nvflash --protectoff

5. Flash gpu vbios
./nvflash vbios_new.rom

6. If there is a subsystem mismatch, use -6 to override (careful!)
./nvflash -6 vbios_new.rom

7. Confirm new vbios
./nvflash --version

8. Reboot rig