Wireless card not working? (Broadcom 4311)

I have recently installed ubuntu 14.04 on one of my laptops. Since I found it working a lot faster and efficiently than windows, I decided to install it on my older, x32 hp Pavilion dv6000.
I installed 14.10 onto it, but during the installation I realized that it wouldn't let me connect to any wifi (I am using ethernet instead).
I had a look at many tutorials that claimed to solve the problem (for example: Installing Broadcom Wireless Drivers ) and this is what the terminal threw back at me.

lspci -nn -d 14e4:

02:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11b/g WLAN [14e4:4311] (rev 01)

$ sudo apt-get purge bcmwl-kernel-source

E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.

I get this error whenever I try a command that has anything to do with my wireless driver.

So I tried to run sudo dpkg --configure -a

$ sudo dpkg --configure -a

Configuring bcmwl-kernel-source (6.30.223.248+bdcom-0ubuntu1) ...

Removing old bcmwl-6.30.223.248+bdcom DKMS files...

-------- Uninstall Beginning --------
Module: bcmwl
Version: 6.30.223.248+bdcom

Kernel: 3.16.0-25-generic (i686)

Status: Before uninstall, this module version was ACTIVE on this kernel.

wl.ko:
- Uninstallation
- Deleting from: /lib/modules/3.16.0-25-generic/updates/dkms/
- Original module
- No original module was found for this module on this kernel.
- Use the dkms install command to reinstall any previous module version.

depmod..........

DKMS: uninstall completed.

---

Deleting module version: 6.30.223.248+bdcom

completely from the DKMS tree.

Done.
Loading new bcmwl-6.30.223.248+bdcom DKMS files...
Building only for 3.16.0-25-generic

Building for architecture i686
Building initial module for 3.16.0-25-generic
Done.

wl:
Running module version sanity check.
- Original module
- No original module exists within this kernel
- Installation
- Installing to /lib/modules/3.16.0-25-generic/updates/dkms/

depmod..........

DKMS: install completed.

Then it just stays on "DKMS: install completed." although the process does not end.
When I tried to end the process (^C)
I got this:
dpkg: error processing package bcmwl-kernel-source (--configure):
subprocess installed post-installation script was interrupted

There was an error while processing:
bcmwl-kernel-source

Any help would be appreciated.
Thanks

With a temporary internet connection:

sudo apt-get update
sudo apt-get purge bcmwl-kernel-source

sudo apt-get install firmware-b43-installer

Reboot and tell us if your wireless is working.