If there are some problems happened to the device, perform the factory
data reset would help (In the menu of Settings->System->Reset
options).
Notes: The "Factory data reset" will erase all data from the internal
storage and reset the device to defaults. Please backup corresponding
files in advance.
4.Technical support
1) On the homepage, tap Technical Support to enter the menu. Here are
several commonly-used functions and our contacts.
2) Firmware update: online and local upgrade are available.
FAQ (frequently asked questions): parts of frequently asked questions
and corresponding measures are listed.
3) Quick start guide: tap to check out the internal quick start guide of
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