My wifi support got broken after I upgraded my kernel from 3.2 to 3.4 for ubuntu 12.04. I know I need to use
sudo apt-get install firmware-b43-installer but whenever I type it into terminal, I get:
Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package firmware-b43-installer
I also tried using synaptic package manager but when I search for firmware-b43-installer I don't see any options. Check box for Proprietary drivers for devices (restricted) has also been selected from Settings->Repositories but I still don't see firmware-b43-installer.
lspci -vvnn | grep 14e4 command on the terminal gives:
02:00.0 Network controller : Broadcom Corporation BCM4331 802.11a/b/g/n [14e4:4331] (rev 02)
I am worried that I may have deleted some important package while trying to fix wifi. Please help I am very new to Ubuntu.