You can download any i OS software updates for i Pad, i Phone, and i Pod touch without using i Tunes.
There are actually two ways to do this, the first is using the i OS device itself but there are caveats and limitations with that, and then there is the traditional method of downloading the update files directly from Apple without i Tunes, which is particularly helpful for those who rely on download managers or who are just encountering trouble with i Tunes automatic updates.
This video will show you how to restore you i Pod touch or i Phone to the original version.
This will erase everything off you device and return it to the factory settings.
This is a useful tool if you have made a mistake on jail breaking or for whatever reason you might have.
Then i Tunes will back up your i Phone data to the computer.
Want to restore your i Phone 7/SE/6/5/4 without upgrading to the latest i OS 10.1.1 or i OS 9/8?
With the daily usage of your i Phone or i Pad, more and more data are gathered on your i OS device.
You can always download i OS IPSW files without i Tunes, and then update the software using i Tunes itself.
Select your i OS hardware to get a complete list of i OS updates for that device: That’s all there is to it.