Comment 4 for bug 191726

Have a look at http://www.linuxwireless.org/en/users/Drivers/b43 , maybe that can help you. There I found the following, too: "4306 and 4309 cards with a MAC core revision of 4 or less should also use b43legacy". So keep this in mind when trying to setup the driver. If your card is supported by the b43-driver, you'll need firmware 4.80.53.0, if your card needs b43legacy, you'll need firmware 3.130.20.0 (as bcm43xx did).