Sony XPERIA XZ2 Instruction Manual page 233

If the update failed and all operations become
･
disabled, please contact a DOCOMO-
specified repair office.
Messages (SMS) sent while updating are
･
stored in the SMS center.
Performing update may take time.
･
Updating is unavailable in the following cases.
･
- During a call
- Out of service area
- Tethering in use as an access point
- When date and time are not set correctly
- When the remaining battery is not sufficient
- When the remaining memory is not
sufficient
- When the basic software is altered illegally.
Use Wi-Fi connection (with docomo nano
･
UIM card not inserted) to perform updating
during international roaming.
Exit from all applications before performing
･
installation.
Update the software with the battery fully
･
charged.
Do not turn off the terminal while updating.
･
Stay in a place with strong radio wave
･
condition when downloading. The update
may be canceled if the radio wave condition
is not good enough.
If an update is not needed, "No upgrade is
･
needed. Use it as it is. " appears.
For update available period, refer to NTT
･
DOCOMO website.
Updating software
You need to perform the installation by
･
yourself for updating software. Drag the
u
status bar down Tap a notification
[install].
To change the setting of auto downloading of
･
update file or auto updating, from the Home
u
screen, [Settings]
u
phone] [Software Update]
of "Auto download/Auto upgrade".
When "Auto download/Auto upgrade" is OFF,
･
perform operation of "When the icon does
not appear in the status bar" (P.231).
When the icon does not appear in the
status bar
Perform the update as follows.
From the Home screen,
1
u
[Settings]
phone].
[Software Update]
2
Download starts.
･
After a message for installation
3
start appears
Installation starts.
･
u
Tap
u u
[System] [About
u
Tap /
u u
[System] [About
u
[Update now].
u
[INSTALL].
Appendix/Index
231