I've tried Z4 Root and Recovery Flasher on MyTouch 3G. Both aren't working. Am I doing something wrong?; I downloaded the files on to the SD card (including a rom), installed them with Astro File Manager. Z4 Root just closes, and Super User (correct?) is not there afterward. Do I have to downgrade? I'm on 2.2.1. Suggestions on how to fix? Thanks.