How to enable the chime startup on the MacBook Pro 8,1?

So I would like to try to enable the boot chime on this MacBook Pro 2011. However, it doesn’t work..I tried to follow the tutorial of enabling it using the command line but it didn’t worked, I can’t listen to the boot chime, does the OCLP is blocking it or something? Or the process of enabling it is different? I’m running MacOS Ventura on it. Thank you!