IPhone5S mobile phone How to upgrade to iOS8? Apple 5s Upgrade iOS8 tutorial

1, we first go to the Apple mobile phone official to download a iOS8 system installation files it;

2, then upgrade the computer itunes to the latest version of it, and then connect the Apple phone to the computer and then we have to back up the phone data.

3, then we press the SHIFT key on the keyboard and then click on itunes "Check Update" to enter.

4, OK wait for itunes detection after the update we choose just prepared IOS8 firmware, such as figure;

5, then find the iOS8 system we downloaded and then click "Update" to enter, as shown in the picture.

6, OK click Update after we just wait for automatic upgrade software, it can be, after the renewal of the phone can be restarted;

7, upgrade after we look at the version number is not the latest version of the AH