range Pi User Manual Copyright reserved by Shenzhen Xunlong Software Co., Ltd
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b. Then make sure that the development board is not inserted into the TF card and
not connected to the power supply
c. Then press and hold the MaskROM button on the development board, the
position of the MaskROM button on the development board is shown in the
figure below:
d. Then connect the power supply of the Type-C interface to the development board,
and power on
e. If the previous steps are successful, the development board will enter the
MASKROM mode at this time, and the interface of the burning tool will prompt
"found a MASKROM device"
f. Then insert the TF card into the development board
g. Then please select advanced features
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