I did that and it didn’t work. But luckily I was able to time machine to a few hours back and everything was okay. That **** had me scared smh. I’m supposed to getting the new RX 5700xt, should I have any problems with getting audio through hdmi with this one. It should have the newest drive and tech I’m assuming
aRemove both Lilu.kext and AppleALC.kext from System/Library/Extensions, then run Kext Utility to let it finish the maintenance job.
You may also perform a NVRAM reset (if you don't need web driver).
If still doesn't work, then it's not Lilu or AppleALC related, but you accidentally changed something else. And there is no way for me to tell what it is.