XYZprinting Crazy3DPrint CZ-300 DIY 3D Printer - Manual (Page 29)

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3) If you connect printer via USB to your Mac, you may see below screen.
1. To show which port was the device connected
2. To show which new FW bin file will be upload to device
3. Please check-out the “Erase all” and “Boot to flash” check box.
4. Click “Write” button to do the F/W update process.
5. Do not click “Read” button that will read binary data from device and then replace the correct bin file.
6. After write and updated (see below screen), please reboot your device then you will have a new version of firmware.
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