S saiweng New member Mar 3, 2011 #1 ...phone is IOS 4.0? now i would like to upgrade to iOS4.2.1, can i directly do it in itune? if yes, what will happen to my iphone after upgraded to 4.2.1? thanks!
...phone is IOS 4.0? now i would like to upgrade to iOS4.2.1, can i directly do it in itune? if yes, what will happen to my iphone after upgraded to 4.2.1? thanks!