I have an MacBook Pro 15" 2018 and I can't install the beta 4 version of Big Sur no matter what I do installing in safe mode , reset NVRAM, SMC reset, Single user mode, setting the time, try out another user, recovery mode, try deleted and download a new one and bootable drive. My Mac still won't install the beta version of Big Sur.
An error has occur while installing macOS Big Sur
Just the same problem, can not install beta 5 and beta 6 also