13
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.com
2
. connect to USB port or TTL port through a USB cable or data cable, Press and
hold the
Set button and power on, then the L2 light is always on.Then press and hold
the
Set button again until L1 and L2 are always on
,
and the software displays the port
number
at the same time, it indicates that the upgrade mode is entered.
3
. Open the correct firmware you downloaded. If it is correct, will display
“firmware file identification is completed.”