Firmware update issue: avrdude has no access to COM port

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PMF

(@pmf)

Active Member

Just had the same Issue on Win 11, and for me the following steps solved it:

Open Device Manager
Expand the Menu on "Ports (COM & LPT)"
Double-click "Original Prusa i3 MKS (COM..)
Go to tab "Driver" and choose "Uninstall Device"
In the pop-up box make sure to check "Try to remove drivers" and click "ok"
In the menu of the Device Manager, click on "Acton", then choose "Scan for hardware changes", your Printer Driver will now be reinstalled new
Go back to Prusa Slicer and Flash your Firmware

Cheers

e.g. John

Publié : 10/06/2023 11:47 am

Ján Pastucha

(@jan-pastucha)

Membre

great thanks, it helped! I changed the port from 3 to 20 and the firmware loaded correctly.

Thank a lot!!! SK-Jan

Publié : 12/10/2023 7:42 pm

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