Please unlock Nokia 8390

[xCHiP]

Could someone please generate an unlock code for my phone!!
Thanks in advance..

Nokia 8390
IMEI: 010093304095014
Locked to ATT USA

[alih81]

#pw+035433466346137+1#
#pw+383156113103550+2#
#pw+834801362240302+3#
#pw+319476641776570+4#
#pw+903462033156566+5#
#pw+417267345574465+6#
#pw+108224030634626+7#

[xCHiP]

Cannot undo restriction ..!!!
Whats that mean ??