Hard Reset SONY Xperia Z4v

First method:

  1. Start by switching off the cell phone by holding down the Power button. Hard Reset SONY Xperia Z4v
  2. Afterwards go to Settings and then to Backup & Reset.
  3. Then selec Factory Data Reset and tap Reset Phone
  4. Choose Erase Everything if you are sure you want to clear all your data. 
  5. In the next step select OK to confirm the whole operation.
  6. Congratulations! The hard reset has just been performed.

Second method:

  1. First you should download flashtool from Sony website: http://developer.sonymobile.com/services/flash-tool/
  2. Make sure, that you have installed drivers for your USB data cable.
  3. Now turn your device off.
    Hard Reset SONY Xperia Z4v
  4. Then press and hold Volume Down, and connect to USB cable.
    HardReset SONY Xperia Z4v
  5. Follow the instructions on your screen, and accept appropriate options.
  6. Success!

Third method:

  1. First you should download PC Companion, in example from here: http://www.sonymobile.com/gb/tools/pc-companion/
  2. Install it and run.
  3. Next you will see window with 4 options.
    Master Reset SONY Xperia Z4v
  4. Choose option "Support Zone New!", and click "Start".
    Wipe data SONY Xperia Z4v
  5. Wait for the program to install the appropriate add-on.
  6. After that you will see next window with 3 options.
    Format SONY Xperia Z4v
  7. Go to option "Phone / Tablet Software Update", and click "Start".
  8. Select "repair my phone / tablet".
    HardReset SONY Xperia Z4v
  9. Now follow the instructions and accept all informations. 
    Restore SONY Xperia Z4v
    Remove screen password SONY Xperia Z4v
  10. Please be patient and wait until preparing computer for software update is complete.
    Remove Screen Lock SONY Xperia Z4v
  11. Afterwards choose your phone / tablet model.
    Permanently delete data from SONY Xperia Z4v
  12. If you see this window, then connect your device into your PC.
    Hard Reset SONY Xperia Z4v
  13. Great job! Your device is ready to use.

Sony Xperia Z4 hard reset or pattren unlock(password unlock)...

Hard Reset will erase all of your data
All described operations you are doing at your own risk.

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