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Firmware 6.5.6 Removed Already  

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Ruebarb
(@ruebarb)
Estimable Member
Firmware 6.5.6 Removed Already

What the deal? The firmware was released only for a few hours and then taken down.

Core One L MMU3, MK3S

Napsal : 03/06/2026 2:32 pm
Kachidoki
(@kachidoki)
Estimable Member
RE: Firmware 6.5.6 Removed Already
Posted by: @ruebarb

What the deal? The firmware was released only for a few hours and then taken down.

Arrghh, just updated the whole fleet few minutes ago...

Napsal : 03/06/2026 2:34 pm
hyiger
(@hyiger)
Famed Member
RE: Firmware 6.5.6 Removed Already

Guess they found a last minute show-stopper bug. @kachidoki you should probably revert. 

Napsal : 03/06/2026 3:07 pm
Ruebarb
(@ruebarb)
Estimable Member
Topic starter answered:
RE:

Glad Prusa pays attention to the forum

https://www.reddit.com/r/prusa3d/comments/1tvtw9d/prusa_buddy_fw_656_retracted/

https://www.reddit.com/r/prusa3d/comments/1tvsk49/dont_install_the_github_fw_for_mk4s_from_today/

This post was modified před 3 hours by Ruebarb

Core One L MMU3, MK3S

Napsal : 03/06/2026 4:53 pm
Kachidoki
(@kachidoki)
Estimable Member
RE: Firmware 6.5.6 Removed Already

It looks like the issue is specific to the MK4S. Mine starts up normally, so I’ll wait for the next version.

Version 6.4.2 was released at the same time for the XL. The release notes are brief, but I’ve noticed an improvement in the user interface. When you select tools to rearrange the filaments, the selected print head lights up. But I also found a bug right at the start of the first print, when switching to the left screen, the printer status overlaps the information.

Napsal : 03/06/2026 5:27 pm
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