SW4STM32 and SW4Linux fully supports the STM32MP1 asymmetric multicore Cortex/A7+M4 MPUs

   With System Workbench for Linux, Embedded Linux on the STM32MP1 family of MPUs from ST was never as simple to build and maintain, even for newcomers in the Linux world.
And, if you install System Workbench for Linux in System Workbench for STM32 you can seamlessly develop and debug asymmetric applications running partly on Linux, partly on the Cortex-M4.
You can get more information from the ac6-tools website and download two short videos (registration required) highlighting:

System Workbench for STM32

No longer able to program my NUCLEO-H743ZI

I’m not on a Mac (on Linux); I’ve seen that a few times.

Mostly it’s because you have an OpenOCD zombie process hanging around (kill process, or reboot machine)

Sometimes it’s because your OS has lost the plot in regard to USB devices (ie: unplug ST-Link, re-plug)

The other day, it was driving me nuts and I realised that my USB hub had crashed (!); unplugged the hub and re-plugged and everything was good again.