This method will not work for all Broadcom BCM43xx cards. It has been tried by me on Intrepid Kubuntu (up to A4 release), Hardy Ubuntu (8.04 and 8.0.4.1) and Intrepid Ubuntu (A5). These files were needed due to the version install problems that started in early July 2008.
If this does not work for you please take a look at the excellent ndiswrapper post
here. The reason I no longer use that post is that it is more complex, but does cover more Broadcom cards.
Attached are some firmware files for Broadcom BCM43xx. What you need to do is save the file to your Ubuntu Home directory. Next, in Nautilus file manager, you want to right-click on the file and select extract here. You'll now have a directory called firmware created in your Home directory.
Now run up a terminal and enter the following command
You'll see two directories b43 and b43legacy. In terminal now enter
Code:
sudo mv b43 /lib/firmware
sudo mv b43legacy /lib/firmware
These commands move the firmware into your /lib/firmware directory.
Now if you reboot your machine, hopefully Ubuntu will seem these files and install the drivers for your wireless card.
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