Starting with the GeForce GTX 900 series (Maxwell), NVIDIA uses Falcon embedded security coprocessor code in its graphics cards. It prevents GPU from booting with unauthorized BIOS firmware. As TechPowerUp writes, two enthusiasts have independently developed tools that allow you to flash almost any BIOS on almost any NVIDIA GeForce graphics card, bypassing protection against unauthorized changes.
The tools are called OMGVflash and NVflashk. The possibilities of these utilities are almost endless. For example, with their help you can install the BIOS of a video card with factory overclocking on a model that does not have such overclocking. In addition to changing GPU clock speeds, BIOS changes allow you to increase the maximum power consumption threshold, which has a greater impact on performance as it increases overclocking potential.
In addition, the BIOS modification allows you to control the GPU voltages, cooling and fan curve, which allows you to make the graphics card quieter if only the cooler is able to keep the GPU from thermal limitations, which can also be adjusted can. For example, you can reset the GPU voltage to 1.1V on the flagship GeForce RTX 4090. This voltage was originally reserved for the early RTX 4090 series. However, with the advent of the AD102-301 GPU, the maximum voltage was fixed at 1.07V.
The creator of the OMGVflash tool, an enthusiast using the alias Veii, posted on the TechPowerUp forums broad topic, which reports on the utility’s first public beta, its development history, instructions for use, and some troubleshooting tips. A similar topic on the TechPowerUp forums created Author of NVflashk utility.