Just installed Ubuntu 12.04 and I can't connect to my wireless network. My network doesn't even appear. I have a message it says:
device not ready firmware missing.
This is what I get when I run,
lspci -nn | grep 0280 in terminal:
03:00.0 Network controller : Broadcom Corporation BCM4331 802.11a/b/g/n [14e4:4331] (rev 02)
Please help me to get this working.