User's Manual

Reset: reset the device to its factory state (delete all user data on
the device, and this cannot be undone)
Firmware upgrade: check information of the existing version and
new version.
About us: check the model name, version number, patent
information of the device.
Online Update
When there is a new version upgradable, the device will check for it
when user switched language, reboot the device, or 24 hours after
the previous check. Both WIFI and mobile network are applicable for
the update.