L475E-IOT01A1 - Unable to access the board using a terminal window , under Mac OS 10.15.7. USB port ST-LINK visible as /dev/cu.usbmodem146403 as well as /dev/tty.usbmodem146403 but cannot access to it (used "sudo screen " to no success). Please help

[FBian.1 · Accepted solution]

Problem solved. Had to download "Serial Tools" from App Store. It works like a charm.