: The most reliable archive for NVIDIA NVFlash versions.
You need to locate the specific nvflash_5.163.zip archive. This file typically contains the main NVFlash executable. A quick online search for "nvflash 5.163 for DOS" will lead you to various tech forums and download sites that host a copy of this classic tool.
This tool does not work in a Windows Command Prompt. You must boot into a pure DOS environment (like FreeDOS or MS-DOS via USB). nvflash 5.163 for dos
Change the boot priority to make the USB drive the primary boot device. Save changes and exit.
在NVFlash漫长的版本演进历史中，。根据相关记录，NVFlash v5.142已具备完整的UEFI支持能力。从v5.551开始，NVIDIA对其进行了大量修改，而一直延续到 v5.163（官方确认支持GeForce 880M） ，完整的UEFI BIOS刷新功能依然保持可用。 : The most reliable archive for NVIDIA NVFlash versions
Extract the archive. You will typically find files named NVFLASH.EXE and CWSDPMI.EXE (a DOS protected mode interface required for the program to run).
Copy these files directly to the root directory of your bootable USB drive. A quick online search for "nvflash 5
Unlike newer builds (e.g., 5.667+), 5.163 still includes the native .exe capable of running in a pure 16-bit DOS environment.
nvflash newbios.rom