.i have unlock a z140v today, it dosen't work with direct unlock.
i get info but it reads just one code and the progress-bar freezd ay 25%.
i start the phone with a sim inside and when it displays that the sim is not accepted, i tasted that code and prest ok => phone was unlockt
I don't know if so work unlock on these phones with usb-smart because "poor support" but i figer out alone that i need a usb-cable for this, and that it dosent work with the cable set with 9V batt.
don't know if this help...
ps: sorry for my english.