Black Screen/Booting Issue After FPOS C.073 Android 13 Update

I guess, that when you say, that you cannot do anything, that you see a log screen?
In my case, this screen was a little weird, as the clock wag not fully visible and I could not see anything change until I logged in.

And the login is done as follows:
Press Space
Then enter your Pin
Then press enter

You should now see your home screen.
If not, begin again with pressing space and so on.

Sometimes I needed three tries, but I got in.

Maybe that helps?