How to Hard Reset

  1. Install the flashtool from Sony website http://developer.sonymobile.com/services/flash-tool/.

    Hard Reset keys Sony 402SO Xperia Z4 TD-LTE

  2. You should have drivers for USB data cable.
  3. Power off the device.
  4. Hold down the Volume Down key and connect device using the USB cable.
  5. Follow the instructions on the display to complete the process.
  6. That's all! After these actions, your device data will be deleted. 

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