You cannot run NVFlash 5.163 inside a standard Windows Command Prompt window. You must boot your machine into native DOS. Prerequisites
This indicates the version of NVFlash you are using does not recognize the EEPROM controller chip on the graphics card. If you see this on a newer GPU, you will need to step up to a later version of NVFlash. Conclusion nvflash 5.163 for dos
It sounds like you’ve come across —likely an older but significant version from NVIDIA’s GPU firmware flashing tool history. Here’s why that version stands out and what makes it “interesting” to enthusiasts: You cannot run NVFlash 5
is a widely recognized, stable DOS-based build of this utility, frequently used when modern versions encounter errors or for specialized troubleshooting. It is distributed via Guru3D and TechPowerUp forums for enthusiasts. Why Use the DOS Version? If you see this on a newer GPU,
: If a card fails to output video after a bad flash, booting into DOS with a secondary card (or an automated script) often allows the user to re-flash the original BIOS.
NVFlash 5.163 is generally compatible with NVIDIA GPUs ranging from the up through the GeForce 900 series (Maxwell). While it may detect newer cards, it may lack the specific EEPROM support required for Pascal (GTX 10-series) or newer architectures, which often require versions like 5.3xx or higher. Where to Download