ACTIVATE z3xPRO: z3x Pro Activation available here
UNLOCK INSTRUCTIONS:
1. Power on the phone.
2. Tap 7 times on 'Build number' in 'Settings'-'About phone' to enable 'Developer options',
go to 'Settings'-'Developer options' and enable 'USB debugging'.
3. Connect the phone to PC with USB cable, install drivers if needed.
4. Press button 'Read codes' to read security codes.
no need to root