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betaflight f3 fc
#1
HI, when connected to betaflight f3 fc trought beta flight configurator the chanels  color receiver bars do not appear is all blank, i have tried to flash betaflightf3 fc  from 3.1.0 to 3.1.7 and get message  fail to open serial port
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#2
Hey, welcome to the forum. Which version of the Betaflight Configurator are you using? (you can view the version number under the logo when open)
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#3
Also you need to power on your quad, and your TX to get the bars in the receiver tab working.
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