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How To Install BCM43XX Driver On Ubuntu 11.10

After building my own kernel (version 3.2-rc7) i had some problems with installing the driver for my WiFi card. The card i have in my laptop is the following: Broadcom Corporation BCM4312 802.11b/g LP-PHY (rev 01). I tried to install the driver using the Additional drivers menu but when installing i got a message that the installation wasn’t possible and to check the jockey.log. In the log file i noticed that the card is “blacklisted” and after removing it from the blacklist.conf it still wouldn’t install.



So after some searching on the internet i found a way to install the firmware. To download and install the needed files open a terminal window (press Ctrl+Alt+T) and copy+paste the following lines:

cd ~/Downloads/

wget http://mirror2.openwrt.org/sources/broadcom-wl-4.150.10.5.tar.bz2

wget http://downloads.openwrt.org/sources/wl_apsta-3.130.20.0.o

When download extract the broadcom-wl-4.150.10.5.tar.bz2 file using the following command:

tar xfvj broadcom-wl-4.150.10.5.tar.bz2


To install the firmware:

sudo b43-fwcutter -w /lib/firmware wl_apsta-3.130.20.0.o
sudo b43-fwcutter --unsupported -w /lib/firmware broadcom-wl-4.150.10.5/driver/wl_apsta_mimo.o


It may take some time before the wireless networks are detected and in the worst case you need to reboot your system.


Source.

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It worked thanks for your info and sharing with everyone.