Comment 17 for bug 197819

Hm, b43-fwcutter is supposed to download and install the firmware right away on package installation. Can you please test this with

  sudo rm -r /lib/firmware/b43* # or move them to a different directory
  sudo dpkg -P b43-fwcutter
  sudo apt-get install b43-fwcutter

this wil completely remove and reinstall b43-fwcutter. Say yes (press enter) to the question whether to download the firmware. Does this fetch and install /lib/firmware/b43/ properly?