Reuse MMU3 from MK3S+ to CoreOne - Hardware, firmware and software help https://forum.prusa3d.com/forum/original-prusa-i3-mmu3-hardware-firmware-and-software-help/reuse-mmu3-from-mk3s-to-coreone/ Prusa3D Forum Discussion Board en-US Wed, 10 Jun 2026 02:42:18 +0000 wpForo 60 RE: Reuse MMU3 from MK3S+ to CoreOne https://forum.prusa3d.com/forum/original-prusa-i3-mmu3-hardware-firmware-and-software-help/reuse-mmu3-from-mk3s-to-coreone/#post-775684 Sat, 27 Dec 2025 17:56:38 +0000 Now I will wait for the INDX upgrade ;)

]]> Hardware, firmware and software help Koos https://forum.prusa3d.com/forum/original-prusa-i3-mmu3-hardware-firmware-and-software-help/reuse-mmu3-from-mk3s-to-coreone/#post-775684 RE: Reuse MMU3 from MK3S+ to CoreOne https://forum.prusa3d.com/forum/original-prusa-i3-mmu3-hardware-firmware-and-software-help/reuse-mmu3-from-mk3s-to-coreone/#post-765794 Mon, 29 Sep 2025 12:29:03 +0000 I had contact with support. There is no official upgrade rather then first upgrade to MMU3 for MK4 and then upgrade from MMU3/MK4 to Core One. For me that is no option. 

]]> Hardware, firmware and software help Koos https://forum.prusa3d.com/forum/original-prusa-i3-mmu3-hardware-firmware-and-software-help/reuse-mmu3-from-mk3s-to-coreone/#post-765794 RE: Reuse MMU3 from MK3S+ to CoreOne https://forum.prusa3d.com/forum/original-prusa-i3-mmu3-hardware-firmware-and-software-help/reuse-mmu3-from-mk3s-to-coreone/#post-765682 Sat, 27 Sep 2025 20:22:09 +0000 Contact support via chat to see if the MMU3 MK3.X to MK4S+ kit is still available.

I didn't see it today when I looked for the link to it. 

]]> Hardware, firmware and software help K7ZPJ https://forum.prusa3d.com/forum/original-prusa-i3-mmu3-hardware-firmware-and-software-help/reuse-mmu3-from-mk3s-to-coreone/#post-765682 Reuse MMU3 from MK3S+ to CoreOne https://forum.prusa3d.com/forum/original-prusa-i3-mmu3-hardware-firmware-and-software-help/reuse-mmu3-from-mk3s-to-coreone/#post-765589 Fri, 26 Sep 2025 13:02:53 +0000 I now have a MMU3 on a MK3s+ and I want to buy a Core One. I would like to reuse my MMU3, but there is no upgrade available from MMU3 for MK3S(+) to MMU3 for Core One.

Is there a possibility to reuse my MMU3 on a new Core One or do I have to buy a new MMU3?

Thx for Ideas.

]]> Hardware, firmware and software help Koos https://forum.prusa3d.com/forum/original-prusa-i3-mmu3-hardware-firmware-and-software-help/reuse-mmu3-from-mk3s-to-coreone/#post-765589