It can be installed from source. I learned compiling the source and realize that Compiling isn't Rocket Science.
Just follow the steps for
First you need to download Broadcom's IEEE 802.11 Driver from here
Check your architecture and download appropriate one.
Also download the patch file.
copy the downloaded files to home or any location u like.
Now comes compilation..
Open your favourite terminal and run the following commands
tar zxf ../hybrid-portsrc_x86_64-v5_100_82_38.tar.gz
patch -p0 <../5_100_82_38.patch
sudo make install
sudo depmod -a
su -c 'echo "modprobe wl" >> /etc/rc.d/rc.local'
On any security issue, run all the above removing sudo after
Do every thing in the Geek way.