You can find this specific version on enthusiast repositories like the NVIDIA NVFlash Downloads on TechPowerUp (usually listed under the "Older Versions" or "DOS" sections).
Ensure the BIOS you are flashing is specifically for your exact card model.
Select the USB drive from the list to boot into the FreeDOS command prompt. Step 4: Backup the Original VBIOS
If you need help configuring your environment or finding the correct parameters, please let me know: nvflash 5.163 for dos
nvflash --update newbios.rom
Writes a newer official VBIOS to patch bugs, improve stability, or unlock features.
Force-flashes a BIOS by overriding various ID mismatches (Board ID, PCI Subsystem ID, etc.). How to Use NVFlash 5.163 in DOS You can find this specific version on enthusiast
NVFlash 5.163 for DOS: The Essential Guide to Legacy NVIDIA BIOS Flashing
nvflash --overridenouefi newbios.rom
Removes the write protection from the EEPROM to allow flashing. nvflash -4 -5 -6 [filename].rom Step 4: Backup the Original VBIOS If you
NVFlash version 5.163 was released during a transitional era of GPU architecture. It is designed to support legacy NVIDIA pipelines and specific EEPROM (Electrically Erasable Programmable Read-Only Memory) chips. This version is typically used for: (MX and Ti variants) GeForce FX Series (FX 5200, 5600, 5700, 5900, 5950 Ultra) GeForce 6 Series (6200, 6600, 6800 GT/Ultra)
Generally, this version provides excellent compatibility for: (e.g., 8800 GTX, 8600 GT) GeForce 9 series (e.g., 9800 GTX, 9600 GT) GeForce 200 series (e.g., GTX 260, GTX 280, GTX 295)
The basic flash command: