Backing up the i Phone has always been an interesting phenomenon.i Tunes makes backing up your i OS device inherently easy, and i Cloud, when you have enough space to store all of your files, makes it even simpler.Whatever the case, we’ll walk you through the entire process.Note that you can use i OS 9.0.1, or i OS 9.0 and then update to i OS 9.0.1 after installation is complete.
So what should you do if your i Phone freezes up or gets stuck during/after i OS 10/9/8 update? In the following, I'll tell you 4 tricks on how to unfreeze i Phone stuck on i OS 11/10/9 update.
Do note this firmware based method is intended for advanced users.
The average i Phone, i Pad, or i Pod touch owner should install the i OS 9 software update through the Settings app in i OS, or through i Tunes as usual.
If you have decided you’d like to update an i Phone or i Pad to i OS 9, you can install i OS 9.0.1 manually using firmware and i Tunes.
The manual firmware method is more advanced, making it perhaps best for specific reasons, like to resolve the frustratingly unresponsive “Slide to Upgrade” screen, to fix the Software Update Failed error, due to storage space limitations on the target device, because sometimes it’s just easier due to bandwidth constraints, or because you’re updating multiple of the same devices.