unlocking nokia3120

[u-tool]

Hi,I want to unlock my nokia3120(UK,T-mobile)with a data cable but don't know what program is best.Could you give me links or at least names of programs.I'm ready to sell my phone if I don't find a way to unlock it.Have tried with codes but none of them was good and the cable is the only solution now.
Thanks

[Mark]

there is no software for nokia phones, its all clips or service tools now