Instructions to Input Unlock Code in S5230 KPN netherlands with 3 codes
 

When you get codes from server like this :

Hello Gsmcheckpoint,
Order#23025 is completed(Verify).
Model = 'S5230', Imei(s) = '355178-03-888888-2', Unlock code = '14603168 - 51595316 - 81948358'

The first code is unfreezing code
the seconde is nck (netwerkblokkeringscode )
the third one is Sp code

when you get codes just put wrong simcard in the phone wil ask for network code put the seconde code and then phone ask for sp code put the third code and is doen