Honiture G20 Pro User Manual page 27

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Clean the charging contact (recommended cleaning)
Upgrade the firmware
Start the smart phone app, and enter the firmware upgrade page. After the new firmware is detected, follow the instructions to upgrade the
firmware. To upgrade the firmware, the power must be equal to or greater than 50%. It is recommended that you place the machine on the
docking station for upgrade.
Clean the signal transmission zone (Recommended cleaning frequency: monthly)
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