Unlock k330

Hello need help there is K330 t-mobile that want unlock by credits but evry time its freeze.



Checking Login and Password... OK
Ballance: 25 crd.
You have 25 credit(s) left. This operation takes 10 credits.Continue? Yes
Searching modem interface... found COM65
Reading data from phone... OK
IMEI: 354890076730..
Checking root rights...

and FINISH