NEC525 for ATTW...please help!

[H.Y.K]

NECkmp6j1f1-6a
fcc id: a98-KMP6J1F1-1A
canada:140K-KMP6J1F1
imei : 010147000499985

Usb always not recognized :mad: ,i can't unlock this phone..please calculator NCK code for me,thanks..