Ez nem megy:
Turn off the device.
Press and hold the Volume Up key and the Home key, then press and hold the Power key.
When the Samsung Galaxy logo screen displays, release all of the keys, the press and quickly release the Power key
'Installing system update' will show for about 30 - 60 seconds, then a 'No command' Android will appear before showing the Android system recovery menu options.
Press the Volume down key several times key to highlight 'wipe data / factory reset.'
Press the Power key to select.
Press the Volume down key until 'Yes -- delete all user data' is highlighted.
Press the Power key to select and start the master reset.
When the master reset is complete, 'Reboot system now' is highlighted.
Press the Power key to restart the device.
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