New bios versions aren't always perfect... hence your question.
Newer bios versions can slow PC down; for example -
https://forums.tomshardware.com/threads/b650-f-bios-update-just-information-not-a-question.3836322/
I have seen people need to roll back from latest because it introduced a problem they didn't have before
I have seen Motherboard makers remove bios versions due to problems later found with them.
Being on cutting edge isn't always best idea.
Prior to recent generations, flashing bios could brick motherboard. Many now have defenses against that but its still enough to stop me updating my BIOS, even if there are newer ones than what I have now.
Its like any driver, only update if you have problems or it adds a feature you need/want
If it worked, cool.