In any case, if you are running i OS 5 or later, you can use OTA to update i OS with no attachment to a computer or PC whatsoever.
If an update is available, tapping on Download and Install will finish the process for you with no attachment to a computer and no i Tunes at all. This is by far the easiest way to get the i OS update installed onto a device and requires no computer at all, the whole thing is completed on the i Phone or i Pad.
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.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.We will cover both methods of obtaining i OS software without using i Tunes to download it, we’ll start with the easiest method of using the device itself to get the i OS update. Thanks to OTA (standing for Over The Air) updates, you can also download updates to i OS directly on an i Phone, i Pad, or i Pod touch without even using i Tunes.There is a caveat here though, and that is the device must be running system software later than version i OS 5.0, so older hardware may be left out.