High, noob here.
I am having some trouble with my Arduino (compatible) board, Adafruit M4 Express, but only with the Arduino IDE.
I keep losing the bootloader, and sometimes, the IDE cannot find or identify the USB port.
I have tried many things, but one thing I have not done is to 'reinstall' the Arduino software. I am running Arduino 1.8.12 on a RPi-4B.
I used the terminal, and changed directory to the Arduino 1.8.12 directory and ran
sudo ./uninstall.sh
The script runs and returns that the uninstall has been successful, and the desktop icon removed.
Only problem is that the desktop icon is still there, and I can run the IDE!!!
Okay, I know I am doing something wrong, but I do not know what. What I want to try is to completely remove the Arduino software, re-download the latest version,a nd re-install.
Maybe there are other ways that are known to resolve the issue I have had. Unfortunately for whatever reason, Adafruit has been unresponsive, not typical, perhaps they are busy with the business shut down. If that is the case here, I also understand. Stay well, but if you can, please help.
Roger Ayotte