Originally posted by Manlol
With PSITA
I do not know if you can use PS3ita Manager on a CFW other than 4.50ita but it is worth a shot. If you install the PS3ita manager pkg file you want to open PS3ita Manager and then go into Network Settings and then click Restore Original Console ID. You will have to do this everytime you turn off the ps3 and turn it back on. Hope this helps
EDIT**
And if your CID is banned then you can Set New Console ID in there, I canot remember what it is listed as but you should se it.