How to install Wireless drivers in Linux Mint with no internet access

Its is easy to install wireless drivers when you have access to internet through the following command:

sudo apt-get install firmware-b43-installer

If you do not have access to the internet it is a little tricky. For that we require 2 packages:
1. b43-fwcutter
2. broadcom wireless driver

There is too much information present on internet to solve this issue. I have copy-pasted the procedure which worked for me.

Download files required:
1. b43-fwcutter_015-14_i386.deb
2. wl_apsta-3.130.20.0.o
3. broadcom-wl-4.150.10.5.tar
4. broadcom-wl-5.10.56.27.3_mipsel.tar


Installation Procedure:

1. Install the b43-fwcutter package. This is usually located on the Ubuntu install media under /cdrom/pool/main/b/b43-fwcutter/ or you can download the binary '.deb' package by following the links on launchpad.

Double click on the package to install or in a Terminal issue the following commands:

cd /cdrom/pool/main/b/b43-fwcutter/
sudo dpkg -i b43-fwcutter*

1. On a computer with Internet access, download the required firmware file:
   
   b43legacy - http://downloads.openwrt.org/sources/wl_apsta-3.130.20.0.o
   b43 (10.04 Lucid Lynx) - http://mirror2.openwrt.org/sources/broadcom-wl-4.150.10.5.tar.bz2
   b43 (12.04 Precise Pangolin) - http://mirror2.openwrt.org/sources/broadcom-wl-5.10.56.27.3_mipsel.tar.bz2
   
   For the latest information on what files to download seehttp://wireless.kernel.org/en/users/Drivers/b43#Other_distributions_not_mentioned_above andhttp://wireless.kernel.org/en/users/Drivers/b43/developers .
2. Copy the downloaded file to your home folder. Open a new Terminal and use b43-fwcutter to extract and install the firmware:
   
   b43legacy

   sudo b43-fwcutter -w /lib/firmware wl_apsta-3.130.20.0.o

   b43 (10.04 Lucid Lynx)

   tar xfvj broadcom-wl-4.150.10.5.tar.bz2
   sudo b43-fwcutter -w /lib/firmware broadcom-wl-4.150.10.5/driver/wl_apsta_mimo.o

   b43 (12.04 Precise Pangolin)

   tar xfvj broadcom-wl-5.10.56.27.3_mipsel.tar.bz2
   sudo b43-fwcutter -w /lib/firmware broadcom-wl-5.10.56.27.3/driver/wl_apsta/wl_prebuilt.o

3. Restart the computer or reload the b43/b43legacy module as outlined in the Switching between drivers section below (replace b43 with b43legacy where appropriate).