AT&T BlackBerry OS 4.5 Goes Official

RIM’s BlackBerry OS 4.5 has been on its site for a while now, but AT&T has only just gotten around to announcing the arrival of the OS for its 8220, 8320 and 8310 handsets. Of course, if you’re a savvy BlackBerry user you probably would have just deleted the vendor.xml file to use the OS build from any other carrier on your BlackBerry. Anyways, if you’re not running OS 4.5 on those devices yet, you can pick it up here.