Try again and this time, just straight away drag the file and put the permission to 0755. Happen to me the first time i paste it. Just straight away paste the commcenter file. After that go to Settings>General>Reset>Reset All Settings, after that check in Settings>Messages> and make sure the option to enable MMS appear. and then Reboot.Hope it went well.. GUD LUCK (you gonna need it...hehehehe)