Samsung

I followed the instruction presented below and it worked fine. The only problem was that I was so damn tired when I did it so I put the wrong SIM-card in first and now it has "Personalized" on the wrong SIM-card. So the problem with the "wrong card" at start-up is still there when I have my correct card. I tried to do it again with my correct card but then it just sais that "it is already personalied". What can I do ?? Can I "unpersonalize" it again and start all over again ??

######Instructions
Press *#06# and write down your IMEI
Unlock Codes
Code 1: *2767*688 then your IMEI and then press #
For example *2767*688352708000828246# (Everything before the / for C225)
Code 2: *0141#
Code 3: 00000000 (8 zero's)

Entering the Codes...
(continues)