If you are referring to your console ID being banned, you can get a new CID from a third party source (most likely another person) and apply that to your PS3.
If there is any info of getting unbanned on a ps3 console please feel free to help me as I am banned and want to be unbanned.
If you are referring to your console ID being banned, you can get a new CID from a third party source (most likely another person) and apply that to your PS3.