Sony Z5 Unlocking Cable

Can anyone tell me what data cable i need to unlock
Z5 for any network? I have a data cable but i've heard
it has to have croc clips for external power.
Mines doesn't have croc clips.
Is external power for MAX232 or for phone?
Is the any way of modifing cable i've got.

regards, Craig

"Is external power for MAX232 or for phone?"

ive been looking for an answer to this too ..... did you find anything out?

WBR

Jag

Use cable with external power and just connect to 9V battery done quite a few of these what software r u using?