Hi i write arduino and updating with instructions. But i hawe problem:
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer
On other computer i hawe a same problem. what can i doo help 
Welcome to the Forum@L_B,
Where did you get the Maslow from and where did the Firmware come from that you are trying to upload?
Kind regards, Gero
I buy it from oficial makermade cnc oficial site. And i send sofware with istructions.
So it came with the Firmware on an USB-dongle?
Yes i hawe it on usb. But when i updating i hawe a time out error
Do you have the correct port and board set in the software? Are you using the Arduino IDE on windows?
If this is a DUE board, I think they send them with the firmware preloaded.
The board is set to “Aduino Mega 2560”, that is the problem, set it to Due
What i can choose?
That is strange. Can you add the DUE with the ‘Board Manager’? Mine on linux looks like this
Edit:
This is old, but maybe can help https://blog.startingelectronics.com/cant-find-arduino-due-in-board-list-of-ide/
I dont fix it… Buy expensive maschine but program did not work.
I thought the arduino came pre-programmed with the M2. Is there a reason you are trying to program it?
Tagging @MakerMadeCNC…
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Can you open the ‘serial monitor’? What do you see when you set ‘baud’ set to 38400.
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No it no programited too m2.
Did you do the windows installation for the Due mentioned here? https://www.arduino.cc/en/Guide/ArduinoDue
GRBL looks good! There is something on it.
So you have the correct port and board settings. Don’t bother with uploading firmware.