Have you tested yourself? I have tried with several winimeis for Z105, with com and usb cable, and never could unlock the damn phone!
Please state here correct winimei and datacable to use.
The unlocking process can be performed by many ways such as box, flash, cable code etc., i recommended to the code. If you wanna code get it form superunlockcodes.com/samsung/rs6wp8/ or contact your network provider.