Unlock mobile phone SonyEricsson Z520, Z520i

Connect the phone powered off, without simcard and good charge of battery to the unlock cable.

Select the model K750/W800/Z520 in the phone menu, select the interface, the COM port and the baud rate like the next image.

Check the box Clear SP Locks and click the button Do Selected Jobs.

Now press the power button on the phone and wait a few seconds while the software is working.

After this process the phone is unlocked.