I bought my MyTouch 3G (non-slide) from eBay. It runs ok but it freezes a decent amount and some days are better than others for how long it takes to get connected to WiFi connections. Is there a way I can do a reset on it to wipe everything ever done to it and, like, flash a fresh install of Android on it? I don't want to upgrade the Android version, I just want to reload it from scratch so the phone would be as if it was new out of the box. If I did it, would it automatically download any needed OS updates from T-Mobile? Thanks.