If you go that route, do not forget to backup beforehand.
Though the average user is better off going the easy routes of updating i OS with i Tunes or OTA, IPSW can have very practical uses as well.
The i Phone provides a way to preserve your data by creating a backup on your computer.
After creating a backup of your i Phone's data, all your content, data and settings can be restored in the event of a data failure.
A significant advantage to using firmware files can be found for users with limited access to broadband internet, where downloading a software update on a remote faster connection makes more sense.
Typically you would then copy that IPSW file to a USB key or DVD to bring it home to manually update a device.
Not all versions of i OS IPSW will work on all devices, so be sure to select the proper version for your hardware, and to use the latest which is supported.
Software updates always come with the potential risk of data loss if an error occurs during the updating process.
Typically a normal i Tunes based restore is sufficient, which is why that is fairly rare.
This tutorial demonstrates a user-friendly method to make full-featured i Phone backup and restore on PC without i Tunes.
Backups include apps and app documents, preferences, contacts, calendars, messages and more.
It's essential to back up your i Phone and/or i Pad every time you update the device's software. Follow this guide on backing up, restoring, and updating your phone and tablet.
The i Phone 5 and later, i Pad (fourth generation and later), and i Pod Touch (sixth generation) can run i OS 10. Plug it into your computer, open i Tunes, and the model as well as the currently installed version of i OS are listed under the Summary tab which has a phone icon in the top left.