Sorry, that link was wrong. It should be this.
http://homepage.uibk.ac.at/~c705283/archives/2011/09/04/linux_support_for_broadcom_4331_wireless_chip_macbook_pro_81/index.html
Sorry, that link was wrong. It should be this.
http:// homepage. uibk.ac. at/~c705283/ archives/ 2011/09/ 04/linux_ support_ for_broadcom_ 4331_wireless_ chip_macbook_ pro_81/ index.html