I have just received an arduino MKRZERO, i have tested a handful of examples and libraries on it and everything worked fine.But when I tried to upload the Multiserial example (in the communication submenu) this error showed up : no device found on ttyACM0, and sure enough the board is no longer detected anywhere on my system (linux mint 18.3 x64). The board is clearly not dead, nothing exploded, the chip is cool and everything seems to be ok. I tried to connect a usb to ttl to the serial pins of the board and still no luck, nothing found on ttyUSB0. I am not an expert in all of this and i have no idea what to do to save my MKRZERO, I found nothing on internet so maybe someone on this forum might be able to help me?
Thank you.
Thank you for your reply. But the problem is not with my computer but with the board. trying a different port and on another computer did not resolve my issue. It really seems that the upload of the multiserial example had gone wrong for a reason, it seems the connection between the board and the computer might be responsible. and because of that my board is no longer programmable,I paid a lot, regarding to what i am earning, to get this board and I really need it for an important personnal project. I have no tool to test or reflash the bootloader but i have a few spare arduino nanos, could I use them to reflash the bootloader, using arduino as isp?
update: after searching for a while i found that it is not possible to reflash the board usin arduino as isp, as the mkrzero is an arm board and the arduino an avr one. Well it seems that I am doomed with my no longer functionning board.