XYZprinting Crazy3DPrint CZ-300 DIY 3D Printer - Manual (Page 27)

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2) The device manager will show information Bossa program port (Com Port)
Users may use a tool or the flathead screwdriver 4-15 to press the button, and may check the status of con-
nection appears in device manager as “Bossa Program Port (COM…)”.
Users can download the up-to-date version of CZ-300 firmware from the website via:
https://www.crazy3dprint.com/support
3) Open the SAM-BA; following select the board as “at91sam4s8-ek”.
4) Browse the file (.bin), select it, and click “Open”.
Users can download the up-to-date version of CZ-300 firmware from the website via:
https://www.crazy3dprint.com/support
5) Click “Send File” button, and click “Yes” to “Unlock/Lock region(s)”.
6) Click “Execute” button few times until the log information is terminated.