April 2015
112
11
Backup, restoration, and update
11.1 The update package is available on the entire
network. Why can't I find it?
1.
Check whether your phone has been rooted and the system files have been deleted.
2.
If the system files have not been modified, go to
Settings
>
Apps
>
Settings
and clear
data. Switch to a mobile network or Wi-Fi network and search for the update package.
11.2 What can I do if my phone fails to download the
update package?
1.
Check whether your mobile or Wi-Fi network is disabled. If so, the download will not
start.
2.
Check whether airplane mode is enabled.
3.
Check whether you have touched the
Pause
button.
11.3 What can I do if the system update notification is still
showing after my phone has been updated?
Make sure your phone is connected to a mobile or Wi-Fi network after the update.
11.4 Why does my phone display an installation package
failure message?
Your network connection may be poor, so the downloaded installation package is incomplete.
Re-download the installation package. If the network is still poor, use another network or
download it at another time.