Firmware 3.0.4 doesn't seem to have a way to select type of filament I'm loading
 
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Firmware 3.0.4 doesn't seem to have a way to select type of filament I'm loading  

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idcstf
(@idcstf)
Member
Firmware 3.0.4 doesn't seem to have a way to select type of filament I'm loading

Hi All,
I just updated my MMU3 firmware and it appears the Preload to MMU (advanced) setting has been removed. I am getting an Filament Does Not Match error from PrusaConnect. Anyone else having this problem? Is there a fix?

Thanks Ahead,
Ian

Opublikowany : 11/04/2026 2:51 pm
vhubbard
(@vhubbard)
Reputable Member
RE: Firmware 3.0.4 doesn't seem to have a way to select type of filament I'm loading

The loading procedure changed.  See https://forum.prusa3d.com/forum/original-prusa-i3-mmu3-general-discussion-announcements-and-releases/3-0-4-firmware-for-mmu3/#post-787304

Opublikowany : 12/04/2026 1:03 pm
Mike B
(@mike-b-3)
Estimable Member
RE: Firmware 3.0.4 doesn't seem to have a way to select type of filament I'm loading

 

Posted by: @vhubbard

The loading procedure changed.  See https://forum.prusa3d.com/forum/original-prusa-i3-mmu3-general-discussion-announcements-and-releases/3-0-4-firmware-for-mmu3/#post-787304

This procedure is exactly what used to be called "Advanced Load to MMU" (something like that - it had the word "Advanced" in it, but I can't find the actual menu label now that I've upgraded).  So it got renamed, not changed.  The other loading procedure many people were using must have been deleted.

Prusa MK4 since Jan 2024, MK4S/MMU3 since Jan 2025, Printables: @MikeB_1505898

Opublikowany : 13/04/2026 7:15 pm
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