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Method 2:
Connect SMOOTH-X2 to the “ZY Cami” app. If “ZY Cami” app prompts to upgrade
the firmware, follow the instructions to upgrade. Internet connection is required.
Before upgrading the firmware, please ensure that the SMOOTH-X2 has more
than 50% power remaining. You will not be able to exit the app interface or
access in the background during the upgrading process. Pay attention to the
prompts on the app.
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Firmware Upgrade