You can update the software when a system update is released.
IMPORTANT
•
Check the following before starting the update.
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The remaining battery level is sufficient
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The unit has available storage space (flick the Start screen to the left, in the All apps list, tap [Settings] → [System] → [Storage], and if there is no storage space, make some room for the update)
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The date and time are correct
1.
Flick the Start screen to the left, and then in the All apps list, tap [Settings] → [Update & security] → [Phone update] → [Check for updates].