I recently checked for the os7 update on my iphone 4 but realised that i had previously downloaded os 6.1.3 to my device but didnt install it now when i check for update its just showing me that i downloaded os6 and that i should install it, now wat i want to know is do i have to install os 6 before i see the os7 update or is there a way to reset that windows or to delete that os that was downloaded and im currently jb thanks i need help