Comment 30 for bug 197819

@BEN :
You need to do what the dmesg says.
The dmesg says, that the firmware is missing or wrong version.
You need to go to the http://linuxwireless.org/en/users/Drivers/b43#devicefirmware page, READ it, pick the right firmware, do what the text there says (hint : the restricted-manager most probably installs the right version of b43-fwcutter, so no need to compile it) remember to use sudo when fwcutting (might be a need to fix the /etc/hostname *) file first) and this worked for me.