Hard Reset SONY Xperia Tipo ST21i

First method:

  1. Power on the phone.
    Hard Reset SONY Xperia Tipo ST21i
  2. Then goto Settings -> Backup & reset -> Factory Data Reset -> Reset Phone.
  3. Now select option "Erase everything", and confirm that.
  4. Done!

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 off your device.
    Hard Reset SONY Xperia Tipo ST21i
  4. Then press and hold Volume Down, and connect to USB cable.
    HardReset SONY Xperia Tipo ST21i
  5. Next follow the instructions in 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 Tipo ST21i
  4. Choose option "Support Zone New!", and click "Start".
    Wipe data SONY Xperia Tipo ST21i
  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 Tipo ST21i
  7. Goto option "Phone / Tablet Software Update", and click "Start".
  8. Select "repair my phone / tablet".
    HardReset SONY Xperia Tipo ST21i
  9. Now follow the instructions and accept all informations. 
    Restore SONY Xperia Tipo ST21i
    Remove screen password SONY Xperia Tipo ST21i
  10. Please be patient and wait until preparing computer for software update is complete.
    Remove Screen Lock SONY Xperia Tipo ST21i
  11. Afterwards choose your phone / tablet model.
    Permanently delete data from SONY Xperia Tipo ST21i
  12. If you see this window, then connect your device into your PC.
    Hard Reset SONY Xperia Tipo ST21i
  13. Done!

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

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