unlock nec 343i - for free, its possible???

[PobreVirtual]

My sister give to me a cellphone nec n343i.
i live in brazil, but when i put my sim i recive the message that he is blocked.

unfortunally i don't have credit card international to pay somebody...
becouse this i'm here asking for help.

please:
*#06# is 356790003910326
she lives in ireland and the operator was O2
somebody can send a unlock code????

[kwikjo23]

help me pls I need the unlock code of my nec 343i,it is lock in uk O2 heres the imei 356790001793534,thanks in advance,you can send the unlock code and the security codes to kwikjo23@yahoo.com