Hard Reset SONY ERICSSON Xperia Active ST17i

First method:

  1. At the very beginning switch on the device by holding the Power key for a short while.Hard Reset SONY ERICSSON Xperia Active ST17i
  2. In the next step find and select Settings and tap Backup&Reset.
  3. Afterwards tap Factory Data Reset and then Reset Phone
  4. Then choose Erase Everything if you are sure you want to clear all your data. 
  5. After that select OK to confirm the whole operation.
  6. Well done! The hard reset has just been performed.

Seconds method:

  1. First of all, you should download PC Companion, in example from here: http://www.sonymobile.com/gb/tools/pc-companion/
  2. Next, install and run this application.
  3. Then you will see window with 4 options.
    Master Reset SONY ERICSSON Xperia Active ST17i
  4. Choose option "Support Zone New!", and click "Start".
    Wipe data SONY ERICSSON Xperia Active ST17i
  5. Wait for the program to install the appropriate add-on.
  6. After that you will see next window with 3 options.
    Format SONY ERICSSON Xperia Active ST17i
  7. Go to option "Phone / Tablet Software Update", and click "Start".
  8. Select "repair my phone / tablet".
    HardReset SONY ERICSSON Xperia Active ST17i
  9. Now follow the instructions and accept all informations. 
    Restore SONY ERICSSON Xperia Active ST17i
    Remove screen password SONY ERICSSON Xperia Active ST17i
  10. Please be patient and wait until preparing computer for software update is complete.
    Remove Screen Lock SONY ERICSSON Xperia Active ST17i
  11. Afterwards choose your phone / tablet model.
    Permanently delete data from SONY ERICSSON Xperia Active ST17i
  12. If you see this window, then connect your device into your PC.
    Hard Reset SONY ERICSSON Xperia Active ST17i
  13. That's all

Third method:

  1. If the display is off, press the Power key to turn it back on.Hard Reset SONY ERICSSON Xperia Active ST17i
  2. In the next step open the phone's dialer and type in: *#*#7378423#*#*.
  3. From the menu which should appear on the screen choose option Customization Settings and then Reset customization.
  4. Confirm information: "data will be cleared and factory data reset will perform".
  5. Accept by pressing Reset customization and reboot.
  6. Well done! Your phone is ready to use.

Hard Reset SONY ERICSSON Xperia Neo MT15i

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

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