Summary
- New features and improvements
- Improved filament change between different materials
- Fixes
- Fixed input shaper calibration for CoreXY printers
- Fixed not loading custom Connect certificates
- Fixed a crash when printing more than 1024 objects
This is the stable release of firmware 6.5.6 for the Prusa CORE One L, CORE One+, CORE One, MK4S, MK4, MK3.9S, MK3.9, MK3.5S and MK3.5 bringing targeted stability improvements and fixes.
Improved filament change between different materials
The filament change procedure has been improved to better handle switching between materials with significantly different print temperatures.
When loading the new filament, the printer now preheats to the higher temperature of the two materials. Once the filament is in the nozzle, the target temperature is adjusted to match the newly inserted material.
This allows the nozzle to cool down gradually when switching to a lower-temperature material, while the previous filament is purged out.
Fixed input shaper calibration for CoreXY printers
Input shaper calibration on CoreXY printers now correctly uses XY coordinates instead of AB coordinates. This fixes an incorrect excitation pattern that could lead to inaccurate calibration results.
Fixed not loading custom Connect certificates
Our customers can set up their printers to use non-official Connect servers by using the “Load Settings from File” menu item. This should also include loading a custom SSL certificate, which was however not working due to a bug in the firmware that has now been fixed.
Please note that we do not open-source our Connect backend infrastructure.
Fixed a crash when printing more than 1024 objects
We addressed a crash triggered when trying to print a G-Code file with more than 1024 objects.