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deleting folders
/usr/lib/firmware/b43 and /usr/lib/firmware/b43legacy
worked here @vbox installations so far...

thx@Magnethelm :o for the clue

So it's no 'reSolution' for you, read and think before yelling ;)...

deleting folders
/usr/lib/firmware/b43 and /usr/lib/firmware/b43legacy
worked here @vbox installations so far...
...