Cannot flash the brandnew MMU2S to 1.06 "Flashing failed: Error: open: Zugriff verweigert
 

Cannot flash the brandnew MMU2S to 1.06 "Flashing failed: Error: open: Zugriff verweigert  

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all you can ear
(@all-you-can-ear)
New Member

Maybe some of you guys can help on this problem:

- updated the MK3S to the 3.8.0 without any problems

- updating the MMU2s (is now on 1.0.5) fails with this print:

 I´d already gave a try with:

- previous slicer version

- different USB-cables (incl. checking the windows USB-driver, which seem to be correct)

- different computer (both in admin mode)

- factory reset

The communication between MK3S and MMU2S seem to work (at least filament is loading sometimes and if loaded, it prints)

 

Kind regards

Alex 

This topic was modified 2 years ago by all you can ear
Posted : 22/10/2019 6:35 pm
JoanTabb
(@joantabb)
Moderator

Hi Alex, 
just before you try to reflash, try pressing the reset button on the side of the mmu2, next to the usb port

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK...
Posted : 22/10/2019 10:45 pm
all you can ear
(@all-you-can-ear)
New Member

Hi Joan,

thanks a lot for your reply - unfortunately, this does also not help.

I´ve tried various timings for the reset, but there is always the same reaction.

Maybe, I´ve just got a defective board...

Best regards

Alex

Posted : 23/10/2019 6:43 pm
JoanTabb
(@joantabb)
Moderator

have you been able to have a chat with support?

Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK...
Posted : 23/10/2019 9:43 pm
all you can ear
(@all-you-can-ear)
New Member

Hi Joan,

yes, finally I decided to ask the PRUSA support - and as always superb reaction, but still under investigation 🙂

Best regards

Alex

Posted : 24/10/2019 7:23 pm
JoanTabb
(@joantabb)
Moderator

Best wishes for a timely resolution!...

by the way, do you have a different micro USB cable that you could try?

and did you have the printer usb cable disconnected whilst you tried to program the MMU?

 

regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK...
Posted : 25/10/2019 12:18 am
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