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Hallo Wolfi,
I have the same problem. My workaround is that I use the “avrdude/6.3.0-arduino17”
My “failing” command is “/Users/xxx/Library/Arduino15/packages/arduino/tools/avrdude/6.3.0-arduino8/bin/avrdude” “-C/Users/xxx/Library/Arduino15/packages/arduino/tools/avrdude/6.3.0-arduino8/etc/avrdude.conf” -v -V -patmega2560 -cwiring “-P/dev/cu.usbmodem1411301” -b115200 -D “-Uflash:w:/private/var/folders/02/2m5xmk0j5bb19k5jt4lnh46h0000gq/T/arduino-sketch-B44509711192F6CF6691A744BF3E1B30/Lueftung.ino.hex:i”
(This is the copy from output window of the IDE, last line, all possible output enabled)
I open a terminal window and the I can load the hex file with:
“/Users/xxx/Library/Arduino15/packages/arduino/tools/avrdude/6.3.0-arduino17/bin/avrdude” “-C/Users/xxx/Library/Arduino15/packages/arduino/tools/avrdude/6.3.0-arduino17/etc/avrdude.conf” -v -V -patmega2560 -cwiring “-P/dev/cu.usbmodem1411301” -b115200 -D “-Uflash:w:/private/var/folders/02/2m5xmk0j5bb19k5jt4lnh46h0000gq/T/arduino-sketch-B44509711192F6CF6691A744BF3E1B30/Lueftung.ino.hex:i”
Make sure that the Serial Monitor is not blocking the “serial line”
Does anyone have an idea how to fix this in the IDE?
Regards
Heico