Hello. i am working on RAK5010. i have 2 boards, one of my board is working fine. like i plug in the usb and board powers up and i can see blue led, and com port appears.
but on the second board all the sequence is same except there is no COM port. i have tried flashing it to the latest firmware. powering up using battery.
NO COM PORT,
NO DATA ON SERIAL PORT.
can anyone guide me on making this board work.