Support Update Samsung Galaxy Gio from 2.2 to 2.3 Gingerbread

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http://androidforums.com – Hi good day guys. I really hope someone could help me.I am a past 60 male that upgraded his phone from the Nokia 5110 to the Samsung Galaxy Gio.I am overwhelmed by the phone,and want to upgrade from 2.2 to 2.3 because the battery life is very poor on the 2.2 PLEASE break it down gently thank you,and will I lose my South African Maps and so on when I upgrade. Kind Regards,Andre (General)