If you have Rockbox installed it should start automatically. But i've got some bad news for you:Rockbox doesn't work for the ipod nano it's only for 5th generation ipod's,it says in lethals tutorial: [bold]THINGS YOU WILL NEED[/bold] <1> A Fifth Generation iPod (iPod Video)
No.. rockbox works for nanos, but my tutorial only covers the 5g Video iPod as it is the most common. [bold]Don't hold menu[/bold] when booting, and rockbox will load (if you have installed correctly). If you do hold menu, it will load the normal firmware..
i have it installed but when i restart it. it goes back to the original firmware even if i set the nano down and dont touch it
its a program that installs it automatically http://www.ipodwizard.net/showthread.php?t=8585 its rockbox 7.7