what should i do if the messages is "cannot undo restriction"

[BlackMamba23]

please help me unlock my nokia 3530, i already entered several codes and i only recieve "cannot undo restriction" what should i do ? please help me. thank you ....:(

[billy707]

You have entered a incorrect code
more than 5 times

you can now only unlock vai cable

lots luck billy

[Onionring]

i also get "can not undo restriction"

can i unlock it with a data cable?
if yes, which software will i use?

thanks! :)