Com port not allocated

  • I have 2 extension 3.1 boards with fipy on both , the first one worked well and i was able to do what i wanted.
    however, after installing the EB 3.1 drivers on the second one by following the documentation, no serial port was allocated, i re-installed them to check if i was in bootloader mode, but still nothing.

    And worse the second one lost its allocated port in the process...

    anyone knows how to solve this ?

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