- New features
- New editions: CORE One+ (Gen 2) and CORE One L+
- Nozzle Wiper support, replacing the previous print-start nozzle cleaning routine
- GT1.5 belts support
- Expansion Joints Gen 2 support, with a much shorter Absorbing heat phase [C1+ (Gen 2)]
- Immediate stop on filament runout
- Guided calibration order - calibrations and tests declare their prerequisites
- Changes and improvements
- Reorganized menus - some settings have been moved to different submenus
- Filament compatibility checks in more places
- Custom filament names may contain lowercase letters
- Fixes
- Fixed not restoring original temperature on filament runout/mid-print change
- More reliable communication with the xBuddy Extension
- The last file in a folder was not visible, and related file list fixes
- The printer no longer beeps on boot in Silent mode
- An upward swipe on the touchscreen is no longer registered as a tap
- And a lot more
Version 6.8.1
14.08.2026
Version 6.5.7
18.06.2026
Summary
- New features and improvements
- Improved filament change between different materials
- Fixes
- Support for older xBuddy versions
- Fixed input shaper calibration for CoreXY printers
- Fixed not loading custom Connect certificates
- Fixed a crash when printing more than 1024 objects
Version 6.5.3
24.03.2026
Summary
- New features and improvements
- Massively speed up MMU filament changes [MMU]
- Updated default input shaper profiles [C1+, C1L]
- Updated translations (beta didn’t have new texts translated)
- Fixes
- M1704 MMU load test gcode now considers toolmapping [MMU]
- Fixed MMU sending spurious attention reports to Prusa Connect during normal toolchanges [MMU]
For a complete overview of features introduced in firmware 6.5.3, users can refer to the 6.5.3-beta published earlier.
Version 6.4.0
25.11.2025
- New features
- Automatic chamber vent opening/closing (C1/+)
- Belt tuning wizard (C1/+)
- Faster and more responsive Prusa Connect experience
- Nozzle cleaning failed wizard
- Auto-retract (MK4 family, XL)
- Auto-retract improvements (C1/+)
- Auto-retract disable option (C1/+)
- Selective factory reset
- Chamber support for backwards G-Code compatibility (C1/+)
- Changes and improvements
- Improved print status messages
- Lazier homing, more cautious calibration
- Autoload improvements
- Unified XL & CORE One chamber filtration
- Option to continue after nozzle cleaning failure
- Print sheet detection (MK4 family)
- Respect maximum printed Z position
- Gearbox alignment calibration (XL)
- Filament change from Tune menu in any tool (XL)
- Support cancelling more objects
- Wi-Fi signal strength indicator
- BSOD knob press behavior
- Reworked filament sensor evaluation
- Ukrainian language support for all printers
- Fixes
- All the fixes from the 6.3.X releases have been expanded to other printers.
- Various fixes and stability improvements