nVFlash is NVIDIA's command-line utility for inspecting and updating the VGA BIOS on NVIDIA graphics adapters. It can compare and verify firmware, write or remove protections, and list adapter details, firmware versions and applied patches. The --index argument selects an individual card in systems with multiple adapters. BIOS flashing carries a risk of making a card unusable, so a backup and careful target selection are important.
| Author: | NVIDIA Corporation |
| License: | Freeware |
| Price: | FREE |
| Released: | Feb 20, 2024 |
| File size: | 11.30 MB |
| Downloads: | 360 |
| Keywords: | vga bios tool, graphics card flashing, update graphics card bios, Windows 10 compatibility, update utility, NVIDIA Corporation, nvidia bios flash utility, firmware update utility, update, graphics card firmware updater, write protect, NVIDIA firmware, nvidia firmware utility, compare gpu bios, firmware, nVFlash, NVIDIA, x64 software |
| Author URL: | https://www.nvidia.com/ |
nVFlash is a command-line utility for working with the VGA BIOS, also called the video BIOS, on NVIDIA graphics adapters. It is intended for users who need to inspect or update graphics-card firmware and are comfortable running commands in a terminal. Because BIOS changes affect how a graphics card starts and operates, the utility is best suited to careful maintenance and troubleshooting rather than routine system tuning.
The utility can write firmware to an adapter and provides commands for comparing and verifying firmware. These checks help users examine whether firmware files differ and confirm a result as part of a deliberate update process. It can also write or remove protections, which may be relevant when firmware changes are blocked. Such operations require care: an incorrect file or interrupted update can leave a graphics card unusable.
For systems with more than one NVIDIA adapter, the --index argument selects a card by its index. This lets an operator target adapters individually instead of treating the system's graphics hardware as a single device. Other commands can list adapter information, firmware versions and applied patches, helping identify the device and review its state before making changes.
Typical uses include checking a card's firmware details, comparing firmware images, verifying a firmware operation, and updating a selected adapter's VGA BIOS. Before writing new firmware, users should preserve a backup of the existing BIOS and ensure that the target adapter and firmware image are correct. If an error occurs during flashing, restarting the computer can make the card unusable; recovery should be considered before taking further action.
nVFlash is freeware from NVIDIA and is a command-line tool rather than a graphical interface. It is available for Windows, including Windows 10 and Windows 11. Firmware flashing carries a risk of hardware downtime or loss of function, so commands should be used only when necessary and with a suitable recovery plan.