Sony Ericsson Xperia M2 D2303 hard reset via update software (100% working solution)

This method will reset your phone to fory settings. Warning! You do this at your own risk! Take your sim card and memory card from the phone before the reset. All personal data from the phone (conts, pictures, messages, apps, games, files) will be deleted! Please, if you can, make a backup before! - \r
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Ofiicial site \r
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Download and install Sony Pc Companion from official Sony website.\r
You need also a micro usb cable and internet connection.