Fix Missing Wireless Drivers on Ubuntu 12.04 , 13.10 BCM43xx Laptop

Your  Laptop’s Wifi not working in Ubuntu ? Here we have solution for BCM43xx Laptops ,

To check your model number

Sample Result

Here BCM4311 is ur model

How to FIX 

Get Internet  Via LAN cable or some where and run following command on terminal.

Restart your Laptop