[b]NOKIA 5300 xpressmusic[/b] PLEASE I NEED A RESET MASTERCODE

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Nokia 5300xpressmusic
IMEI: 355550018858857

hi to the admin and staffs please help me how to reset my security code. I bought this phone 2ndhand thats why i didnt knw the code please help me. Thanks in advance. Gudluck

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Please @staffs out there i really need your help. . .

[Ryan]

IMEI:   355550018858857
Security Mastercode:   6615621132