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.

• 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

Summary

• Display refresh rate fallback to improve stability
• Fixes for rare BSOD crashes during filament handling

• Reduced USB errors
• CORE One printer detection
• Fixed returning to wrong Z position after pause

• Hotfix for the MMU overcurrent
• Fixed returning to wrong Z position after pause