Hi @Blake_ASUS , I also have had the exact same problem keyboard problem for the past month.
I bought the laptop and updated its software the next day and my bios got updated to version 307 (which i guess has this problem)
If you have any solution can you help me.
BIOS version:- 307
MODEL:- Asus TUF A15 2021 (5800h and RTX 3060)
FA566QM (It is written behind the laptop but by my research, it is the same as FA506QM i guess)
My other post is censored for some reasons. This is confirmed to be a bug in the firmware. As of 04/09/2021, the backlight control still does not work in the BIOS. The beta driver sent to me by Blake makes it work before the computer is booted into Windows, Linux, or BIOS. It stops working after. Also, the backlight setting from before the computer is booted into OS gets reset. Therefore, we can conclude that this is a bug, and it fails to function as it should. This is NOT a feature request. The backlight should be able to change IN THE BIOS. Heck, even my 15 dollar mechanical keyboard backlight change properly in the BIOS.
DO NOT CENSOR THIS AGAIN