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• Check out the signal reception status. The software update may fail if the
product is in a place with bad signal reception status.
• Various data registered on the product (address books, mails, still pictures,
music data, etc.) and information of settings will not be changed even after
software is updated. However, note that data may not be protected
depending on the state of the product (fault, damage, getting wet with water,
etc.).
• During international roaming, the software update function may not be
available in some places.
• After you have updated the operating system, you cannot return it to the
previous version.
Do not conduct the following operations during the software update
• Do not move during software update.
Troubleshooting
If you think the product may be malfunctioning, first check the "トラブル診断
(trouble diagnostic)" on the au homepage.
（
h
ttps://www.au.com/trouble-check/）
Also refer to "Online Manual" (Japanese), or the section "故障とお考えになる
前に" in the "取扱説明書 （詳細版） (Full Instruction Manual)" (Japanese)
available on the au homepage.
（
h
ttps://www.au.com/online-manual/shv46/）
（
h
ttps://www.au.com/support/service/mobile/guide/manual/）
(Japanese)
(Japanese)
(Japanese)
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