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Edit by Grégoire Saunier

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[* 1] Verify that the printer is turned on and USB connected.
[* 3] Start PrusaSlicer and navigate to the top menu ''Configuration -> Flash printer firmware''
[* 5] Select the Bear calibration firmware *.hex file using the ''Browse'' button.
[* 8] Verify that the printer is detected in the "Serial port:" window. If not, check that the USB cable is firmly connected to both the printer and the computer. select "Rescan"
-[* 7] Click the button ''Flash!'' to flash the Bear calibration firmware.
+[* 7] Click the button ''Flash!'' to flash the Prusa firmware.
[* 9] Never turn off the printer or disconnect the USB cable while flashing the firmware!
[* 2] Wait until you get a ''Flashing succeeded!'' message.
[* 10] In case of issues while flashing the firmware read the [https://help.prusa3d.com/article/gXdRubco3u-firmware-updating-flashing-problems?code=400&failed=1&reason=Multilingual+is+not+enabled+on+this+account|Prusa troubleshooting article].