If you have LAN / Broadband connection or some kind internet access, then it is easy to install the Broadcom b43 and b43-legacy wireless driver in your Ubuntu Machine. This method supports Ubuntu 14.04 / 13.10 / 13.04 / 12.10 / 12.04 /11.10 / 11.04 /10.10 / 10.04.
This Guide is for b43 and b43-legacy driver only, If you want to install the STA driver then follow my other guide on how to Install Broadcom STA wireless driver in Ubuntu 14.04 / 13.10 / 13.04 / 12.10 / 12.04. If the below driver doesn’t work then try STA driver.
To Install b43 driver
Run the following command in the terminal and type the password for the user when prompted.
sudo apt-get install b43-fwcutter firmware-b43-installer
To Install b43-legacy driver
If you have b43-legacy wireless card then you need to install the legacy driver using the below command.
sudo apt-get install firmware-b43legacy-installer
That’s it. Now Activate your driver using Additional driver and Restart your System.
Hope this will be helpful for you!!!