Note: The serial line must be in full state
2.
3.
4.
★
★
★
★
★
★
5.
★
There are three reasons:
(Ⅰ) The serial port line is a three-wire system
(II) The short-circuit cap of J1 or J2 is not added
(III) The mainboard is not powered on
★
The CPU model selected in FlashMagic is inconsistent with the CPU model of the target board
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