I just installed Ubuntu 14.04 LTS Server on my machine. Its network connection will be through wifi. However, my Wifi connection is not working. 

My /etc/network/interfaces file is:

```
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp

auto wlan0
iface wlan0 inet dhcp
pre-up /etc/init.d/wpa.sh start
post-down /etc/init.d/wpa.sh stop

```

When I run the command "iwlist wlan0 scan" it returns:

```
wlan0     Interface doesn't support scanning : Network is down

```

In the syslog I see:

```
May  9 17:59:15 andyhyatt-server kernel: [  361.085482] ieee80211 phy0: brcmsmac: fail to load firmware brcm/bcm43xx-0.fw

```

This leads me to believe that it is a driver issue. I checked in /lib/firmware/brcm/ for bcm43xx-0.fw, but the only driver in that directory is bcm4329-fullmac-4.bin, which makes sense because I am on a Mac Mini mid 2010 (Macmini4,1). 

I have a BCM43224 802.11a/b/g/n for my network adapter. 

Configuring WPA\_Supplicant is not my problem, I will get to that after I obtain proper drivers. Also how do i install it. 

TL;DR: I need to get a driver for my BCM43224 802.11a/b/g/n.