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Restore factory settings and firmware upgrade methods:
1. Restore the factory setting method: use tweezers to short circuit the two round holes in
the figure, turn on the machine, turn the white light into blue light, and restore the
factory setting.
2. Firmware upgrade method: insert and connect Uv1-7 (USB adapter board) to PC according
to the direction in the figure to upgrade.
Short circuiting these two round
holes can restore the factory
settings
Firmware upgrade interface
Restore factory settings
and
firmware upgrade methods
