Unlock Nokia 6230b Request

I have a Nokia 6230B
Carrier: Cingular USA
IMEI code: 355032000519888

Could someone please reply here with the unlock code. Much obliged.

 

#pw+839 451 157 726 260+1#

FOR THIS PARTICULAR MODEL, NON ACCEPTED SIM IS REQUIRED.
1. Insert a non accepted sim, most times it will show "Phone Restricted"
2. Press the UNDO option
3. You should see a box that says enter restriction code.
4. Enter the code given and then press (OK)

 

thank you very much

 

Thank you for the reply.