I just uploaded a sketch on my Arduino Mega2560 with "ino" as I used to do so for years. Now, the board is not responding anymore. I get the following error on Linux:
Guessing serial port ... FAILED No device matching following was found: - /dev/ttyACM* - /dev/ttyUSB*
whenever I execute "upload" or "serial".
The Arduino IDE tells me
avrdude: usbdev_open(): did not find any USB device "usb"
when I try to reinstall the bootloader.
I do have a 2nd Arduino Uno. This one works well on the same Computer/USB-Port with the same equipment.
I also have an old AVR ISP MKII. Can it be used somehow to revive the board?
Many thanks in advance!