I have been trying to figure this out for awhile and have no luck. I have the MC model 3G 8GB ipod touch running 3.1.2 firmware. I run blackra1n and it goes through just fine, it reboots and comes back to my main screen, however the blackra1n icon is not on my springboard. Its actually not anywhere to be found. However i do have to rejailbreak it if i turn the ipod off or restart it. Help!