If you use update you lose nothing if you restore you lose it all but if you back up first you can then restore to the back up and again lose nothing, ATM it's just 4.1 but 4.2 is coming soon
i need help i tried to update my phone to 4.2 and it said there was an error and it needed to restore back to original settings. so i clicked restore. well now the screen is stuck on a usb pointing towards itunes on the screen and it says the restore didnt work. someone please help my phone is what i depend on most. i think im gonna cry.