I recently installed Mavericks 10.9 to my Dell Inspiron 15 3520. I have found out using DCPIManager that my wireless card is the Broadcom 4365. After researching the card and it's compatibility with Mavericks, I have followed the steps by editing the AppleAirport plist and adding it to the list of cards to use. However, after saving that file, rebuilding the permscache, and restarting many times, the wireless card is still not recognized.
Any help would be appreciated on getting the wireless to work.