I'm just install ubuntu 12.04 precise pangolin, but after installing i still need to download broadcom wireless driver. I don't have a wired connection, can anyone please help me to install it offline? Please help.
In ubuntu unit dashboard search for "driver". You will find a additional drivers application.
And click on "Broadcom STA wireless" item. (Sometimes it may Broadcom something else.)
Then click "Activate" button just below "Close" button. To activate driver you need internet.