About software updates
Warning: If you install a software update, you
cannot use the device, even to make emergency calls,
until the installation is completed and the device is
restarted. Be sure to back up data before accepting
installation of an update.
Downloading software updates may involve the
transmission of large amounts of data (network
Make sure that the device battery has enough power,
or connect the charger before starting the update.
After updating your device software or applications,
the instructions related to the updated applications in
the user guide or helps may no longer be up to date.