Ubuntu 16.04 install Broadcom Wireless Driver

sudo apt-get purge bcmwl-kernel-source
sudo apt update ; sudo update pciids
sudo apt install firmware-b43-install
sudo reboot

ref: http://askubuntu.com/questions/840094/ubuntu-16-04-acer-laptop-broadcom-driver-and-wifi-cannot-be-enabled

Original link: Phanix's Blog