Sharkguy
This is not possible manually.either u hav 2 take it to the nokia care centre or u can get a unique 10 digit master unlocking code for it from the site nokia.com
if it is not available there,u can send ur imei no. to my email id and i will send u the master unlocking code.
thank u
Gud Luc

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Orignal From: i want to reset my security code for my nokia 1600 someone changed it?

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