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kvorhies
(@kvorhies)
Active Member
MMU3

I recently added the MMU3 to my MK4S. I had two successful multicolor prints and then All I get is the MMU overcurrent warning red screen. I have searched and read comments for days and nobody seems to have a solution. Any help would be appreciated.

Posted : 17/02/2025 4:04 pm
Antonio
(@antonio)
Member Moderator
RE: MMU3

https://help.prusa3d.com/article/mmu-overcurrent-26310-mk4s-13310-mk4-21310-mk3-9-23310-mk3-5_405620

I'm not an expert. Ma parlo anche italiano 😉

Posted : 17/02/2025 6:23 pm
Jacek
(@jacek-3)
Active Member
RE: MMU3

There are already many topics about the same problem. @antonio gave the official solution (in my opinion completely ineffective)

The unofficial solution (effective) is here: https://forum.prusa3d.com/forum/original-prusa-i3-mmu3-hardware-firmware-and-software-help/pd-board-issue-overcurrent-overvoltage/#post-736931

MK4s+mmu3 I use a translator

Posted : 17/02/2025 11:26 pm
Richard Magee
(@richard-magee)
Member
RE: MMU3

I made a post in a different forum topic. This might be a better place. If someone could take a look at that post link below, Much appreciated, Thanks.

 

https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-hardware-firmware-and-software-help/new-user-with-mk4s-mmu3-and-the-overcurrent-warning/#post-737113

Posted : 18/02/2025 11:21 pm
LarGriff
(@largriff)
Estimable Member
RE: MMU3

This has been fixed with firmware update to 6.2.3.Alpha

Posted : 12/03/2025 11:48 am
kvorhies
(@kvorhies)
Active Member
Topic starter answered:
RE: MMU3

Thank you. Where do I find and download the new firmware?

Posted : 17/03/2025 9:59 pm
LarGriff
(@largriff)
Estimable Member
RE:

https://github.com/prusa3d/Prusa-Firmware-Buddy/releases

😊

Posted : 17/03/2025 11:02 pm
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