oh nope! a hard reset will automatically reinstall metro (im assuming that that is the rom on your phone right now right?) by itself..
hold the volume down button, power button, and the center button, and while holding down all of these press the reset button on the bottom of the phone.. you will need the stylus to hit the button. continue to hold down all of the other buttons while the phone resets.. *Notice, you will lose all your contacts messages, basically everything thats not on your SD card. so then it will ask you to continue and press volume up button. and go ahead do that. your phone will "re-flash" itself now.
People hard reset all the time to try and get rid of "bugs" on there phone.. trust me i do it a TON! haha its part of the fun
