Originally posted by Vince
Changing the cid itself will make it not useable. It could be the region, but Id also try a cid changer pkg to see if that works for you. If not, it could actually be banned as soon as you signed in.
We used the same computer to change the PS3's CID. (Control Console). We just disconnected and connected to different PS3's.
Since That didn't work, we tried it on separate computers and that also did not work. I've tried over 5 CID changing pkg's.