Cannot log into Mac after updating to Big Sur 11.0

I have just updated my MBP from Big Sur Beta 2 to Big Sur Beta 3 (11.0), but when I try to log in, the screen goes black a couple of seconds, and I am presented with another login screen, where I have to type in my username and password. When I do that, the screen goes black again for a couple of seconds, and the log in screen reappears.
I have tried to run in recovery mode, but that just gives a black screen after login, and never gets any further.
I have tried to reinstall Big Sur Beta 3, but with the same result.
I have reset NVRAM with same result.

I have run out of things to try and really need some help
Did you ever find a solution?
Cannot log into Mac after updating to Big Sur 11.0
 
 
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