You don't live in North Bergen NJ... do you? lol cuz I flashed the wrong drive by accident without saving the key to one of my xbox's so now that xbox was useless. I grabbed a broken (bad laser) drive and just shoved it into the useless xbox and sold it on Craigslist. hehe
anyways... if that xbox you bought worked before you messed around... then you're in good shape. I don't know how you "goofed" but that's very important. did you simply not know what to do and got an error (things are good here) or did you flash the drive with the wrong key(time to throw it out)?