I have a problem with an Arduino Mega 2560 R3 ( stk500_send(): failed to send command to serial port · Issue #7673 · arduino/Arduino · GitHub
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I have a problem with an Arduino Mega 2560 R3 ( stk500_send(): failed to send command to serial port · Issue #7673 · arduino/Arduino · GitHub
SDSUPPORT Defined but SD card not recognized · Issue #23736 · MarlinFirmware/Marlin · GitHub
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Prusa MK3S - Flashing Failed, Error opening serial device · Issue #180 · OctoPrint/OctoPrint-FirmwareUpdater · GitHub
