I hate to break it to you, that thing hasn't worked in well over a month. Also some think an unban means an account unban as well which isn't the case. The xbox scene is more mature with the bans, they take the ban and either live with it and enjoy their hacked xboxes or get another one.
The other thing, Sony's last maintenance has been solely for better cfw detection. You can no longer blame black ops 2 anymore. Just having your ps3 connected online is as bad a risk nowdays.