so i have the latest tinyumbrella and i have it plugged in, then i start tss but what after that? i have a mac and will be using hte limera1n to jb. i just dont want to mess anything up. i also want to preserve my baseband for future selling of my iphone4. how do i just upgrade from 4.0.1 to 4.1? i know you have to do option/restore in itunes, but dont know where to go from there. please help quickly. also is itunes 10.0 ok or do i need to upgrade to itunes 10.0.1???