Backing up updating and restoring ios software
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.
For most users, you’ll want to use i OS 9.0.1 IPSW simply because it’s easier.
It doesn’t matter if i Tunes is on a Mac with OS X or a Windows PC, the instructions are almost exactly the same.
You can also use these tricks if your i Phone stuck in Recovery Mode (red i Tunes logo)/reboot loop during updating to a new i OS version and if your i Phone is working fine and suddenly it freezes. Keep pressing the Home (Volume Down button for i Phone 7 and i Phone 7 Plus) and the Power button simultaneously until the Apple logo comes back on again.
As we all know, restarting your i Phone seems to be an omnipotent trick to solve most minor problems on the first try. Then release both buttons and your i Phone should boot up successfully and work normally.
Of course, you can perform a normal i Tunes backup, and grab all of your messages and the kitchen sink as well, but that’s not a viable solution for everyone.
Doing so voids Apple's user-end-agreement and Apple reserves the right to deny service to any devices that have used unauthorized modifications or software.For starters, backing up your i Phone, i Pad, or i Pod touch is basically an all or nothing affair.It’s the clothes, the appliances and the kitchen sink, or it’s the SMS and i Message messages found in the Messages app.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.