I guess I have posted twice more or less about the same thing @ajb2k3 sorry. I installed the ArduinoIDE on to my MacBook Pro, followed the M5Stack instructions again to install the boards, library and drivers, and I get the same thing on this machine as I do on my iMac. here's the error...
I genuinely think my M5Core2 is bricked. I tried to do some research and it appears there's no successful way to get the core2 into BOOT mode. Sigh...
Serial port /dev/tty.wchusbserial54FC01826501
A fatal error occurred: Failed to connect to Espressif device: No serial data received.
For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.html