Well today I was thinking, mainly because i was fiddling with my mates ipod and he hadnt updated to 2.2.1 so i was updating it for him. Well anyway, when you update your ipod does it modify the firmware whilst keeping all the data files in tact? As far as i understood it you clicked update and then the firmware just replaced itself. Well my idea was why not get this to work for jailbroken software? this would cut the process time of jailbreaking and restoring your files by at least half. if you told iTunes the firmware you had was a version above what you've currently got then it will update and leave the files intact right? Is this possible or is it just not gonna happen?