b43 injection on ubuntu with kernel-2.6.25

apt-get install build-essential bin86 kernel-package libqt3-headers libqt3-mt-dev wget libncurses5 libncurses5-dev

cd /usr/src
wget http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.25.tar.bz2
tar -xjf linux-2.6.25.tar.bz2
cd /usr/src/linux-2.6.25
wget http://patches.aircrack-ng.org/b43-injection-2.6.25-wl.patch
wget http://www.latinsud.com/bcm/mac80211_2.6.24.4_frag.patch
patch -p1 < b43-injection-2.6.25-wl.patch
patch -p1 < mac80211_2.6.24.4_frag.patch

cp /boot/config-`uname -r` .config
make oldconfig
make menuconfig
make-kpkg --initrd --revision=shaol1nint kernel_image kernel_headers modules_image
install .deb files
dpkg -i filename
and reboot

wget http://bu3sch.de/b43/fwcutter/b43-fwcutter-011.tar.bz2
tar xjf b43-fwcutter-011.tar.bz2
cd b43-fwcutter-011
make
cd ..

export FIRMWARE_INSTALL_DIR="/lib/firmware"
wget http://mirror2.openwrt.org/sources/broadcom-wl-4.150.10.5.tar.bz2
tar xjf broadcom-wl-4.150.10.5.tar.bz2
cd broadcom-wl-4.150.10.5/driver
sudo ../../b43-fwcutter-011/b43-fwcutter -w /lib/firmware wl_apsta_mimo.o

sudo apt-get install libsqlite3-0 libssl-dev

apt-get install libnl-dev
sudo mkdir iw
cd iw
sudo wget http://dl.aircrack-ng.org/iw.tar.bz2
sudo tar xjf iw.tar.bz2
sudo make
sudo make install

airmon-ng start wlan0

vi /etc/modprobe.d/options
add new line "options b43 nohwcrypt=1"
This ensures that the encryption on wlan0 doesn't interfere with monitoring. This should be only enabled when aircracking with mon0, as it increases the softmac overhead. Remove it from your options list when not using aircrack for a longer time.