For Dos ((better)) — Nvflash 5.163

NVFlash is a command-line utility developed by NVIDIA (and later distributed by various partners and tech communities) to read, write, erase, and modify the EEPROM (BIOS/ROM) chip on NVIDIA graphics adapters.

Run nvflash --list to identify the index numbers of your cards. The PCI card will likely be index 0 and the broken card will be index 1 . nvflash 5.163 for dos

Note: Attempting to use version 5.163 on modern Kepler, Maxwell, Pascal, or newer architectures (GeForce 600 series and above) will result in compatibility errors. Modern cards require newer, Windows-based versions of NVFlash that support specialized digital signature verification. Why Use the DOS Version Instead of Windows? NVFlash is a command-line utility developed by NVIDIA

Force-flashes a BIOS by overriding various ID mismatches (Board ID, PCI Subsystem ID, etc.). How to Use NVFlash 5.163 in DOS Note: Attempting to use version 5

This signifies that either your GPU is too modern for version 5.163, or the physical EEPROM chip on your legacy card is damaged or unsupported by this version’s internal database. You may need to look for a slightly newer version of NVFlash (such as 5.218 or 5.287) depending on your exact hardware date. Conclusion

nvflash -4 -5 -6 newbios.rom : The classic legacy override sequence. This forces the utility to ignore subsystem ID mismatches, vendor ID mismatches, and PCI device ID mismatches.