How do I get my AT&T Priv unlocked so I can get updates directly from Blackberry?

http://www.xda-developers.com/unlocked-priv-from-att-to-now-receive-updates-directly-from-blackberry/

I like my phone and am not selling it.  I will continue to use it on the AT&T network, which I have been on since the old Cellular One days.  But it would be great to not have to rely on the carrier for updates.