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AWR1642BOOST: Data serial port of AWR1642 BOOST cannot be read

Part Number: AWR1642BOOST
Other Parts Discussed in Thread: AWR1642

I believe I may have a faulty AWR1642 BOOST. Basically, upon flashing it with either SDK 1.1 or 1.2 (I have tried both, same results), I am able to detect both COM ports (config and data), for the first time. Once I uploaded a configuration using the demo visualiser, I can see it plotted for the first time. After switching it off, and back on again, I send the configuration once more, but I cannot see the plots anymore. The Demo Visualiser can detect the config com port, but not the data com port anymore after the first time plotting it. I have tried both recent versions of SDK, I've reinstalled CCS, the GUI run time thing, and reinstalled the demo visualiser itself. I cannot work with the web browser demo vis because it keeps telling me that my TI Cloud Agent is not installed when it is (and my browser is up to date, yes). So many problems with this board.

I have tried changing USB cables too, same result. I have another AWR1642 BOOST from another peer, and that one works perfectly fine. I can configure it, and it plots on the demo vis just fine. So I don't think there is anything wrong with my settings...

Please advise. Thank you.