After installing recommended wifi drivers no networks show

[DMH3006]

Hi, I installed Linux Mint 17.1 MATE and the recommended drivers. Afterwards no wifi signals are detected. This is a freshly installed system so if you could help me get the wifi going.

The result of using ini -Fxz

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System: Host: diogo-MacBookPro Kernel: 3.13.0-37-generic x86_64 (64 bit, gcc: 4.8.2)
Desktop: N/A Distro: Linux Mint 17.1 Rebecca
Machine: System: Apple (portable) product: MacBookPro7 1 version: 1.0
Mobo: Apple model: Mac-F222BEC8 Bios: Apple version: MBP71.88Z.0039.B0E.1111071400 date: 11/07/11
CPU: Dual core Intel Core2 Duo CPU P8600 (-MCP-) cache: 3072 KB flags: (lm nx sse sse2 sse3 sse4_1 ssse3 vmx) bmips: 9556.54
Clock Speeds: 1: 1596.00 MHz 2: 798.00 MHz
Graphics: Card: NVIDIA MCP89 [GeForce 320M] bus-ID: 04:00.0
X.Org: 1.15.1 drivers: (unloaded: fbdev,vesa) FAILED: nouveau Resolution: 1280x800@60.2hz
GLX Renderer: Gallium 0.4 on NVAF GLX Version: 3.0 Mesa 10.1.3 Direct Rendering: Yes
Audio: Card: NVIDIA MCP89 High Definition Audio driver: snd_hda_intel bus-ID: 00:08.0 Sound: ALSA ver: k3.13.0-37-generic
Network: Card-1: Broadcom NetXtreme BCM5764M Gigabit Ethernet PCIe driver: tg3 ver: 3.134 bus-ID: 03:00.0
IF: eth0 state: down mac: <filter>
Card-2: Broadcom BCM4322 802.11a/b/g/n Wireless LAN Controller driver: wl bus-ID: 02:00.0
IF: wlan0 state: dormant mac: <filter>
Drives: HDD Total Size: 320.6GB (1.6% used) 1: id: /dev/sda model: Hitachi_HTS54503 size: 320.1GB
2: USB id: /dev/sdd model: Audio_Player size: 0.5GB
Partition: ID: / size: 19G used: 4.6G (27%) fs: ext4 ID: /home size: 54G used: 96M (1%) fs: ext4
ID: swap-1 size: 1.57GB used: 0.00GB (0%) fs: swap
RAID: No RAID devices detected - /proc/mdstat and md_mod kernel raid module present
Sensors: None detected - is lm-sensors installed and configured?
Info: Processes: 161 Uptime: 6 min Memory: 489.1/7727.9MB Runlevel: 2 Gcc sys: 4.8.2 Client: Shell inxi: 1.8.4

and the result of using iwlist scan

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eth0 Interface doesn't support scanning
lo Interface doesn't support scanning
wlan0 No scan results

[richyrich]

The driver may be installed, but you might still need to install the firmware for the kernel. From Synaptic Package Manager you can find and install the firmware-b43-installer.

[DMH3006]

The driver may be installed, but you might still need to install the firmware for the kernel. From Synaptic Package Manager you can find and install the firmware-b43-installer.

Thank you for your reply.

Unfortunately after installing what you've recommended the issue remains.

[DMH3006]

So I uninstalled bcmwl and went with b43 and the wifi now works with one small issue.
Sometimes it detects the networks and other times it doesn't, can anyone help me understand this?

Thank you.