@RemcoVH I can’t change the interface. Thus the only option/solution is to downgrade to the version that worked correctly for me. But that is still not working. First see if you can talk to the Arduino with the Serial Monitor in the Arduino IDE. Set the baud rate to 115200 and the “End of Line”…

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Downgrade Arduino after firmware update issues

LarryM June 22, 2017, 6:13pm 5

There are problems with the Arduino IDE.

There is a thread here on this forum that addresses the problem, but I don’t have the link right now.

I’ll look for it.

Here: