Flash INAV sucess on Speedybee F405 wing but disconnect and lost port

[Mangjana]

I was planning to flash ardupilot using INAV configurator. But after I tried Ardupilot, I decided to go back to INAV (much easier to use) so.. I reflash INAV. Bad think happen, I connect it, it connected for view minut (serial Port was: /dev/cu.usbmodem0x0000001) and disconnected. Note: I'm using Mac.