I'm really new here and new to this stuff but I'm really stuck here and I need help....I tried to update my Galaxy ace S5830i 2.3.6 with 2.3.7 Gingerbread. But failed to boot up again. Unfortunately I had not backed up. I have tried to flush it with custom Rom but with no success. So I decided to reload the official 2.3.6 OS. But still stuck at boot.