Support->Firmware Upgrade->Local Upgrade" menu, and find the
firmware package file to start the upgrade.
Notes:
1.Do not unzip the firmware package file.
2.Before the upgrade, ensure the power of the device is adequate
(>30%) so to avoid upgrade failure.
3.If the device goes to factory mode which cannot detect the firmware,
the reason may be that the firmware file is damaged. At this time, press
the power button to reboot the device. Re-download the firmware file
and restart the upgrade.
2.Force to reboot
If something wrong that happened to the device (stuck in the Welcome
page, no response, etc.), you can hold the Power and the Play button
together for 10 seconds to force it to reboot.
3.Factory data reset
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