Originally Posted by
kenorian Question: when you do a factory reset, it will bring it back to Kit Kat, and then you still have to do an upgrade, right? So.... how is that different from the update I just did?
No, factory reset will not revert back to Kitkat, it will stay on whichever OS you are currently running, so if you are on Lollipop, it will stay on lollipop, it just resets the OS back to factory settings, deletes all user data and left over junk files, gives you a clean system