Upgrade to iOS 9 without Losing Any Data

Apple has released the official version iOS 9 at September 16. For most iOS users, it is a very troublesome thing to upgrade the system every time. You need to back up your data first, and then upgrade the system, finally restore data. It almost spends half a day to do that. And how to upgrade the system with the original data is a problem that we are most concerned about. Here we introduce a way to you to make your device upgraded to iOS 9 without losing data as well as backing up and restoring data.
 
Before you begin, we recommend FonePaw iOS Transfer to you to make a regular backup for important information such as photos, contacts and other information, which can prevent you from losing important information because of some unexpected issues. Every iOS users should cultivate the habit of backing up data from to time. You can see here: How to backup iPhone.

Only no jailbreak phone users can update iOS 9 system via the following two ways. And for the jailbreak phone users, we will recommend the original "Recovery" approach to upgrade system. But jailbreak iPhone users can still use FonePaw iOS Transfer to backup iPhone first.

Method 1: Upgrade iOS 9 with OTA

iPhone supports OTA upgrade, which means you can upgrade iOS 9 system without USB cable and computer. You can go to Settings > General > System Update. The advantage of this way is that you can be easy to upgrade system with a few clicks on iPhone. What’s more, you can continue to use the iPhone normally while the iPhone is downloading the upgrade package.

The way of OTA upgrade also has its shortcomings. It needs more capacity of space for iPhone because iPhone need to download the upgrade package which will take up the storage space. Maybe it will need additional 1GB- 1.9GB. Especially for 16GB users, each upgrade can be a quite painful thing. But 16GB can still use iPhone Transfer to transfer data to PC in order to space some storage from upgrade.

Method 2: Upgrade to iOS 9 with iTunes

Another method is to connect device with iTunes. And you need to upgrade the latest version of iTunes, then click on the top right corner of the "iPhone" to enter detailed preview screen. If you do not separately download firmware, you can simply click the "Update" button and the computer will download the firmware first, and then update the latest system from device.

Note: The jailbreak iPhone users need to select "Recovery" approach to upgrade system. This way will clear all of data on your device. So you must make a backup with FonePaw iOS Transfer in advance.