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Updating Software
Check whether updates are required via the Internet, and update as required.
Checking and performing available software update is free.
Updating Software
Before Updating Software
Saved data may be lost depending on condition of handset (malfunctioning, damaged, water
seepage, etc.). It is recommended that you back up important data before updating software.
SoftBank Corp. is not responsible for damages from loss of data.
Software Update Cautions
During Update
Handset cannot be used until software is updated. It may take time to update software.
When a device is running software update, don't remove a USIM card from the device or turn its
power off. Doing so can cause failure of the update and result in the device that may be inoperable or
malfunction. If the device is inoperable or malfunctions, contact Customer Service.
Signal during Update
Operate handset where signal reception is good and without changing location. Also operate with
adequate battery charge. Signal becoming weak or Battery becoming low during an update may
cause an update failure. An update failure may disable handset.
Updating Software
In Home Screen,
23/25
Basic Operations
(Settings)
System
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