Unable to set configuration.

I am trying to download Big Sur from (Olar1la) and I followed every single step. My laptop is an asus x441u with intel core i3-7100 and 4gb ram with an 250 SSD storage. I am still stuck with this input and it doesn’t seem to move anymore. I have already modified the BIOS Setting but still, it doesn’t work. Anyone know how to fix this?

Author: @Hopeful-Calendar-557