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Appendix
Updating Software or OS
You can update the product to the most recent software for
optimal performance and to get the latest enhancements.
There are several methods to update software.
■
Notes
• You are charged for data communication when
connecting to the Internet from the product using packet
communication.
• You are recommended to back up your data before
updating software.
• For detailed descriptions on various functions, refer
to the "
取扱説明書
(Instruction Manual)" application
(Japanese) installed on the product or "
取扱説明書詳細版
(Full Instruction Manual)" (Japanese) available on the au
homepage.
• Fully charge before update. If the update is started with
the battery power low or battery power becomes low
during update, software update cannot be done.
• Check the radio wave condition. Software update may fail
in poor reception area.
• Any operations are not available during software update.
Calling 110 (Police), 119 (Fire/Ambulance), 118 (Maritime
rescue) is not available. Alarm does not work, either.
• If software update has failed or stopped, perform the
same procedure again.
• Update is unavailable during international roaming.
• If you fail to update software, it may become impossible
to operate the product. If this happens, bring it to an au
shop or PiPit (not accepted by some shops).
Downloading and updating
software or OS
Update files can be downloaded from the Internet web site
into the product directly.
Selecting "Start major update" downloads the OS for the
product.
Simple menu/Applications list
→
[Settings]
→
[
]
→
[About phone]
→
[Software update]
[Start updating software]/[Start major
update]
From here on, follow the onscreen instructions.