Ok, following these instructions I have tried something - but did not
succeed. (https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx).
1. Install the b43-fwcutter package
Source:
https://launchpad.net/ubuntu/+source/b43-fwcutter/1:015-9/+build/2994319:
cd /cdrom/pool/main/b/b43-fwcutter/
sudo dpkg -i b43-fwcutter*
2. Install the firmware:
Source:
http://mirror2.openwrt.org/sources/broadcom-wl-5.10.56.27.3_mipsel.tar.bz2
tar xfvj broadcom-wl-5.10.56.27.3_mipsel.tar.bz2
sudo b43-fwcutter -w /lib/firmware
broadcom-wl-5.10.56.27.3/driver/wl_apsta/wl_prebuilt.o
3. Switch Drivers
Unload conflicting drivers:
sudo modprobe -r b43 bcma
sudo modprobe -r brcmsmac bcma
sudo modprobe -r wl
Load new driver:
sudo modprobe b43
But the problem is not solved. I still have no Wi-Fi and the info box says:
"Wireless Network device not ready", just like before.
"Screenshot": http://cl.ly/image/0Z3y3S0N1y3S